- Flat grade share
- 100.0%
- Ascent
- 39 m
- Climb density
- 0.2 m/km
- Descent
- 40 m
- Net elevation
- -1 m
- Max absolute grade
- 1.7%
- Fee
- Unavailable
As of
Flattest ultramarathons
The flattest ultramarathons, ranked from trusted raw-elevation route profiles across 110 qualifying races.
Ranking current as ofWhich race ranks first — and why is it Daytona 100 Ultramarathon (Jacksonville Beach to Ponce Inlet)?
Daytona 100 Ultramarathon (Jacksonville Beach to Ponce Inlet) leads this ranking on flat grade share (100.0%).
Compare Daytona 100 Ultramarathon (Jacksonville Beach to Ponce Inlet) vs North Downs Way 100
| # | Race | Flat grade share | Ascent | Climb density | Descent | Net elevation | Max absolute grade | Fee | As of |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Daytona 100 Ultramarathon (Jacksonville Beach to Ponce Inlet) - florida | 100.0% | 39 m | 0.2 m/km | 40 m | -1 m | 1.7% | Unavailable | |
| 2 | North Downs Way 100 Ultramarathon - south-east | 97.3% | 155 m | 0.9 m/km | 95 m | 59 m | 20.8% | £220 | |
| 3 | Bath & Bristol Railway Races Ultramarathon - south-west | 96.7% | 136 m | 2.7 m/km | 135 m | 1 m | 6.7% | £65 | |
| 4 | Wasatch Front 100 Mile Endurance Run Ultramarathon - utah | 96.5% | 1,256 m | 7.8 m/km | 0 m | 1,256 m | 58.7% | Unavailable | |
| 5 | Stort30 Ultramarathon - east-of-england | 95.8% | 99 m | 2.0 m/km | 98 m | 0 m | 7.1% | £55 | |
| 6 | Thames Path 100 Ultramarathon - south-east | 94.4% | 222 m | 1.4 m/km | 174 m | 48 m | 11.9% | £225 | |
| 7 | The Pistol Ultra (Alcoa) - tennessee | 86.2% | 696 m | 4.3 m/km | 696 m | -0 m | 12.1% | Unavailable | |
| 8 | Endurancelife Suffolk (Dunwich) Ultramarathon - east-of-england | 84.9% | 247 m | 4.7 m/km | 246 m | 0 m | 8.4% | £71 | |
| 9 | Kettle Moraine 100 Endurance Runs Ultramarathon - wisconsin | 78.6% | 1,034 m | 6.4 m/km | 1,034 m | -0 m | 16.3% | Unavailable | |
| 10 | NN Ultrabalaton Ultramarathon - hungary | 73.0% | 3,407 m | 8.2 m/km | 3,408 m | -1 m | 22.6% | Unavailable | |
| 11 | Autumn 100 Ultramarathon - south-east | 70.6% | 1,380 m | 8.6 m/km | 1,381 m | -1 m | 21.3% | £220 | |
| 12 | Flint Hills 50 and Marathon Ultramarathon - kansas | 68.1% | 655 m | 8.1 m/km | 656 m | -1 m | 9.6% | Unavailable | |
| 13 | The Wall Ultramarathon - north-east | 63.7% | 1,140 m | 10.2 m/km | 1,158 m | -18 m | 15.8% | £230 | |
| 14 | The Hawk Hundred (Lawrence) Ultramarathon - kansas | 60.6% | 1,527 m | 9.5 m/km | 1,518 m | 8 m | 15.2% | Unavailable | |
| 15 | Ring O' Fire Ultramarathon - wales | 60.3% | 2,480 m | 11.9 m/km | 2,479 m | 1 m | 39.1% | £255 | |
| 16 | Spokane River Run Ultramarathon - washington | 59.3% | 925 m | 18.5 m/km | 925 m | 0 m | 25.9% | Unavailable | |
| 17 | Connemara International Marathon (Connemarathon) Ultramarathon - ireland | 58.0% | 755 m | 11.9 m/km | 732 m | 23 m | 19.4% | Unavailable | |
| 18 | Race to the King Ultramarathon - south-east | 57.0% | 1,434 m | 13.9 m/km | 1,434 m | 0 m | 18.8% | £155 | |
| 19 | Run Woodstock Ultramarathon - michigan | 57.0% | 1,764 m | 11.0 m/km | 1,763 m | 1 m | 10.2% | Unavailable | |
| 20 | Foot Levelers Blue Ridge Marathon Ultramarathon - virginia | 57.0% | 2,551 m | 30.2 m/km | 2,225 m | 326 m | Unavailable | Unavailable | |
| 21 | Lean Horse Ultra Marathon - south-dakota | 56.8% | 1,791 m | 11.1 m/km | 1,781 m | 10 m | 26.2% | Unavailable | |
| 22 | TARC Stone Cat Trail Festival Ultramarathon - massachusetts | 56.7% | 1,094 m | 10.9 m/km | 1,095 m | -0 m | 17.4% | Unavailable | |
| 23 | Race to the Stones Ultramarathon - south-east | 55.7% | 1,260 m | 12.6 m/km | 1,228 m | 32 m | 19.4% | Unavailable | |
| 24 | Rocky Raccoon 100 (Huntsville) Ultramarathon - texas | 53.2% | 1,880 m | 11.7 m/km | 1,952 m | -72 m | Unavailable | Unavailable | |
| 25 | Davos X-Trails Ultramarathon - switzerland | 52.8% | 3,372 m | 49.3 m/km | 3,372 m | 0 m | Unavailable | Unavailable | |
| 26 | Gower Coastal Trail Races Ultramarathon - wales | 52.0% | 1,087 m | 13.5 m/km | 1,088 m | -1 m | 23.7% | £85 | |
| 27 | McKenzie River Trail Run 50K Ultramarathon - oregon | 50.7% | 535 m | 10.7 m/km | 892 m | -357 m | 22.4% | Unavailable | |
| 28 | Reims Champagne Run Ultramarathon - france | 50.1% | 1,343 m | 15.4 m/km | 1,333 m | 9 m | 21.0% | Unavailable | |
| 29 | Holiday Lake 50K (Appomattox) Ultramarathon - virginia | 49.9% | 810 m | 16.2 m/km | 799 m | 11 m | 35.7% | Unavailable | |
| 30 | Ice Age Trail 50 Ultramarathon - wisconsin | 47.8% | 1,263 m | 15.7 m/km | 1,263 m | 0 m | 22.6% | Unavailable | |
| 31 | HOKA Bandera Endurance Trail Race Ultramarathon - texas | 47.7% | 1,711 m | 17.1 m/km | 1,734 m | -23 m | 29.3% | Unavailable | |
| 32 | Lake Tahoe Marathon Ultramarathon - nevada | 46.7% | 1,912 m | 16.5 m/km | 1,939 m | -27 m | 44.7% | Unavailable | |
| 33 | Cairngorms Ultra Trail - scotland | 46.5% | 948 m | 15.8 m/km | 949 m | -1 m | 25.0% | £67 | |
| 34 | Gravel Worlds Run Series (Lincoln) Ultramarathon - nebraska | 46.0% | 589 m | 11.8 m/km | 588 m | 1 m | 8.9% | Unavailable | |
| 35 | Minnesota Voyageur Trail Ultramarathon - minnesota | 45.8% | 1,484 m | 18.4 m/km | 1,484 m | -0 m | 36.5% | Unavailable | |
| 36 | West Highland Way Race Ultramarathon - scotland | 45.8% | 2,703 m | 17.7 m/km | 2,748 m | -46 m | 32.9% | £157 | |
| 37 | Norfolk Festival of Running (King's Lynn) Ultramarathon - east-of-england | 45.4% | 627 m | 12.5 m/km | 628 m | -1 m | 9.8% | £38 | |
| 38 | Javelina Jundred Ultramarathon - arizona | 45.3% | 3,626 m | 22.5 m/km | 4,131 m | -504 m | Unavailable | Unavailable | |
| 39 | Chuckanut 50k Ultramarathon - washington | 40.7% | 1,416 m | 28.3 m/km | 1,422 m | -5 m | 34.9% | Unavailable | |
| 40 | The Arctic Triple // Lofoten Ultra-Trail - norway | 39.8% | 5,472 m | 33.5 m/km | 5,477 m | -4 m | 70.9% | Unavailable | |
| 41 | Mohican Trail 100 Mile Run Ultramarathon - ohio | 39.6% | 2,890 m | 18.0 m/km | 2,883 m | 7 m | 30.8% | Unavailable | |
| 42 | Chiltern Wonderland 50 Ultramarathon - south-east | 38.8% | 1,699 m | 21.0 m/km | 1,694 m | 5 m | 39.0% | £115 | |
| 43 | Leadville Trail 100 Run Ultramarathon - colorado | 38.1% | 4,444 m | 27.7 m/km | 4,445 m | -0 m | 42.6% | Unavailable | |
| 44 | Bimbler's Bluff 50K Ultramarathon - connecticut | 37.9% | 1,092 m | 21.8 m/km | 1,092 m | -0 m | 39.4% | Unavailable | |
| 45 | Highland Fling Race (Milngavie) Ultramarathon - scotland | 37.2% | 1,939 m | 22.8 m/km | 1,758 m | 181 m | 29.5% | £125 | |
| 46 | Two Tunnels Railway Races Ultramarathon - south-west | 35.9% | 1,231 m | 24.6 m/km | 1,229 m | 2 m | 17.3% | £65 | |
| 47 | Endurancelife Classic Quarter (Cornwall Coastal Ultra) - south-west | 35.6% | 1,916 m | 27.1 m/km | 1,884 m | 31 m | 45.0% | Unavailable | |
| 48 | Arc of Attrition Ultramarathon - south-west | 35.4% | 4,116 m | 25.5 m/km | 4,038 m | 78 m | 43.9% | £239 | |
| 49 | Gornergrat Zermatt Marathon Ultramarathon - switzerland | 34.8% | 2,408 m | 52.8 m/km | 404 m | 2,004 m | 32.0% | Unavailable | |
| 50 | South Downs Way 100 Ultramarathon - south-east | 34.7% | 3,410 m | 21.2 m/km | 3,504 m | -94 m | 31.8% | £220 | |
| 51 | Montane Winter Spine Race Ultramarathon - north-east | 34.1% | 9,781 m | 22.7 m/km | 9,901 m | -120 m | 49.7% | Unavailable | |
| 52 | Tecumseh Trail Marathon (Tecumseh Trail Challenge), Nashville Indiana Ultramarathon - indiana | 32.8% | 1,196 m | 23.9 m/km | 1,195 m | 0 m | 24.5% | Unavailable | |
| 53 | Endurancelife Pembrokeshire Ultramarathon - wales | 32.6% | 1,270 m | 22.8 m/km | 1,269 m | 1 m | 29.0% | Unavailable | |
| 54 | Maah Daah Hey Trail Run (Medora) Ultramarathon - north-dakota | 31.8% | 2,080 m | 25.9 m/km | 2,085 m | -5 m | 27.7% | Unavailable | |
| 55 | Sheltowee Trace Ultras (Big Turtle Trail Runs), Morehead - kentucky | 30.8% | 1,187 m | 14.8 m/km | 1,182 m | 5 m | 23.2% | Unavailable | |
| 56 | Wicklow Way Race Ultramarathon - ireland | 30.4% | 3,885 m | 30.6 m/km | 3,920 m | -35 m | 99.4% | Unavailable | |
| 57 | Endurancelife Coastal Trail Series - North York Moors (Ravenscar) Ultramarathon - yorkshire | 30.1% | 1,310 m | 23.7 m/km | 1,310 m | 0 m | 28.3% | £71 | |
| 58 | Devil o' the Highlands Footrace Ultramarathon - scotland | 29.8% | 1,641 m | 23.8 m/km | 1,876 m | -235 m | 28.9% | £100 | |
| 59 | Ultra Trail Vipava Valley (UTVV), Ajdovščina - slovenia | 27.7% | 6,307 m | 38.7 m/km | 6,305 m | 2 m | 66.6% | Unavailable | |
| 60 | Ethias 15 km de Liège Métropole Ultramarathon - belgium | 27.5% | 1,260 m | 28.0 m/km | 1,465 m | -206 m | 56.7% | Unavailable | |
| 61 | Kia Fjällmaraton (Fjällmaratonveckan), Årefjällen Ultramarathon - sweden | 27.4% | 3,203 m | 32.0 m/km | 3,175 m | 29 m | 41.7% | Unavailable | |
| 62 | Patapsco Valley 50K Ultramarathon - maryland | 26.0% | 1,387 m | 27.7 m/km | 1,394 m | -6 m | 31.6% | Unavailable | |
| 63 | Wild Duluth Races Ultramarathon - minnesota | 25.7% | 2,801 m | 28.0 m/km | 2,801 m | -0 m | 35.8% | Unavailable | |
| 64 | Worlds End Ultramarathon - pennsylvania | 25.4% | 3,319 m | 33.2 m/km | 3,320 m | -1 m | 37.1% | Unavailable | |
| 65 | Beachy Head Marathon Ultramarathon - south-east | 25.3% | 1,308 m | 24.9 m/km | 1,305 m | 2 m | 31.2% | Unavailable | |
| 66 | Gorge Waterfalls 100K Ultramarathon - oregon | 25.3% | 3,481 m | 34.9 m/km | 3,481 m | -0 m | 45.5% | Unavailable | |
| 67 | The Malvern Hills Ultra - west-midlands | 24.3% | 2,391 m | 31.6 m/km | 2,391 m | 0 m | 36.3% | £95 | |
| 68 | Massanutten Mountain Trails 100 Mile Run Ultramarathon - virginia | 24.0% | 4,799 m | 29.6 m/km | 4,799 m | 0 m | 35.1% | Unavailable | |
| 69 | Volvic Volcanic Experience (VVX) Ultramarathon - france | 22.0% | 7,564 m | 33.8 m/km | 8,228 m | -664 m | 60.6% | Unavailable | |
| 70 | Sinks Canyon Rough and Tumble Trail Races Ultramarathon - wyoming | 22.0% | 4,282 m | 85.6 m/km | 4,276 m | 5 m | Unavailable | Unavailable | |
| 71 | adidas Innsbruck Alpine Trailrun Festival Ultramarathon - austria | 21.9% | 3,838 m | 34.1 m/km | 3,838 m | -0 m | 57.8% | Unavailable | |
| 72 | Soča Outdoor Festival Ultramarathon - slovenia | 21.8% | 2,541 m | 46.8 m/km | 2,550 m | -9 m | 47.8% | Unavailable | |
| 73 | Tahoe 200 Endurance Run Ultramarathon - california | 21.7% | 13,097 m | 40.6 m/km | 13,099 m | -1 m | Unavailable | Unavailable | |
| 74 | Tollymore Extreme (Tollymore Trail Marathon), Newcastle Ultramarathon - northern-ireland | 21.6% | 1,630 m | 25.9 m/km | 1,638 m | -8 m | 28.1% | Unavailable | |
| 75 | Salomon Ultra-Trail Hungary - hungary | 20.7% | 3,938 m | 35.2 m/km | 3,937 m | 0 m | 46.5% | Unavailable | |
| 76 | Sleeping Giant Trail Runs Ultramarathon - connecticut | 20.5% | 2,012 m | 40.2 m/km | 2,017 m | -5 m | 54.7% | Unavailable | |
| 77 | Cascade Crest 100 Ultramarathon - washington | 20.3% | 6,253 m | 38.9 m/km | 6,268 m | -15 m | 50.0% | Unavailable | |
| 78 | MIUT - Madeira Island Ultra-Trail - portugal | 19.9% | 6,789 m | 61.7 m/km | 6,800 m | -11 m | 77.0% | Unavailable | |
| 79 | Western States Endurance Run Ultramarathon - california | 19.8% | 4,960 m | 30.8 m/km | 6,466 m | -1,506 m | 39.2% | Unavailable | |
| 80 | Run Rabbit Run 50 & 100 Mile Race Ultramarathon - colorado | 19.6% | 11,159 m | 69.3 m/km | 11,151 m | 8 m | Unavailable | Unavailable | |
| 81 | Endurancelife Peak District (Castleton) Ultramarathon - east-midlands | 19.3% | 2,126 m | 41.7 m/km | 2,127 m | -0 m | 42.6% | Unavailable | |
| 82 | ROUT Classic 100 Miles (Rodopi Ultra Trail) - greece | 18.8% | 6,952 m | 38.2 m/km | 6,951 m | 2 m | 57.4% | Unavailable | |
| 83 | FUGA Penyagolosa Trails (Castelló) Ultramarathon - spain | 18.3% | 5,183 m | 48.9 m/km | 3,971 m | 1,213 m | 61.9% | Unavailable | |
| 84 | Tahoe Rim Trail Endurance Runs Ultramarathon - nevada | 17.3% | 5,117 m | 31.2 m/km | 5,117 m | -0 m | 34.8% | Unavailable | |
| 85 | Dalmacija Ultra Trail - croatia | 16.9% | 4,619 m | 44.3 m/km | 4,900 m | -281 m | 68.7% | Unavailable | |
| 86 | Running with the Devil (Las Vegas) Ultramarathon - nevada | 16.9% | 839 m | 16.8 m/km | 839 m | 0 m | 21.6% | Unavailable | |
| 87 | Tamalpa Headlands 50K Ultramarathon - california | 16.8% | 1,966 m | 39.3 m/km | 1,967 m | -1 m | 43.2% | Unavailable | |
| 88 | The North Face Grossglockner Ultra-Trail - austria | 16.5% | 6,328 m | 57.5 m/km | 6,328 m | 1 m | 53.2% | Unavailable | |
| 89 | SciaccheTrail – Cinque Terre Ultra Trail - italy | 16.2% | 4,300 m | 42.4 m/km | 4,334 m | -34 m | 40.1% | Unavailable | |
| 90 | Manitou's Revenge Ultramarathon - new-york | 16.0% | 4,203 m | 49.3 m/km | 4,549 m | -346 m | 67.3% | Unavailable | |
| 91 | Ultra-Trail Snowdonia by UTMB - wales | 15.8% | 9,055 m | 55.6 m/km | 9,055 m | -0 m | 59.5% | £259 | |
| 92 | Tatra SkyMarathon (Zakopane) Ultramarathon - poland | 15.5% | 5,502 m | 45.8 m/km | 5,174 m | 328 m | 68.7% | Unavailable | |
| 93 | Silver State 50/50 (Reno) Ultramarathon - nevada | 15.2% | 2,716 m | 33.8 m/km | 2,717 m | -1 m | 36.7% | Unavailable | |
| 94 | Douro Ultra Trail (Peso da Régua) - portugal | 15.0% | 5,188 m | 51.9 m/km | 5,198 m | -10 m | 63.3% | Unavailable | |
| 95 | Ultra Trail Učka - croatia | 14.8% | 4,470 m | 53.5 m/km | 4,470 m | 0 m | 51.7% | Unavailable | |
| 96 | Dolomiti Extreme Trail Ultramarathon - italy | 14.7% | 6,214 m | 61.5 m/km | 6,213 m | 1 m | 91.9% | Unavailable | |
| 97 | Unicaja Ultra Sierra Nevada - spain | 14.6% | 5,322 m | 53.2 m/km | 3,876 m | 1,447 m | Unavailable | Unavailable | |
| 98 | Hardrock Hundred Mile Endurance Run Ultramarathon - colorado | 14.2% | 9,546 m | 59.3 m/km | 9,547 m | -1 m | Unavailable | Unavailable | |
| 99 | Stranda Fjord Trail Race Ultramarathon - norway | 13.9% | 6,555 m | 69.0 m/km | 6,553 m | 2 m | 73.3% | Unavailable | |
| 100 | Bieg Rzeźnika (Cisna) Ultramarathon - poland | 13.4% | 3,887 m | 48.6 m/km | 3,794 m | 92 m | 45.6% | Unavailable |
North Downs Way 100 Ultramarathonsouth-east
- Flat grade share
- 97.3%
- Ascent
- 155 m
- Climb density
- 0.9 m/km
- Descent
- 95 m
- Net elevation
- 59 m
- Max absolute grade
- 20.8%
- Fee
- £220
As of
- Flat grade share
- 96.7%
- Ascent
- 136 m
- Climb density
- 2.7 m/km
- Descent
- 135 m
- Net elevation
- 1 m
- Max absolute grade
- 6.7%
- Fee
- £65
As of
- Flat grade share
- 96.5%
- Ascent
- 1,256 m
- Climb density
- 7.8 m/km
- Descent
- 0 m
- Net elevation
- 1,256 m
- Max absolute grade
- 58.7%
- Fee
- Unavailable
As of
Stort30 Ultramarathoneast-of-england
- Flat grade share
- 95.8%
- Ascent
- 99 m
- Climb density
- 2.0 m/km
- Descent
- 98 m
- Net elevation
- 0 m
- Max absolute grade
- 7.1%
- Fee
- £55
As of
Thames Path 100 Ultramarathonsouth-east
- Flat grade share
- 94.4%
- Ascent
- 222 m
- Climb density
- 1.4 m/km
- Descent
- 174 m
- Net elevation
- 48 m
- Max absolute grade
- 11.9%
- Fee
- £225
As of
The Pistol Ultra (Alcoa)tennessee
- Flat grade share
- 86.2%
- Ascent
- 696 m
- Climb density
- 4.3 m/km
- Descent
- 696 m
- Net elevation
- -0 m
- Max absolute grade
- 12.1%
- Fee
- Unavailable
As of
Endurancelife Suffolk (Dunwich) Ultramarathoneast-of-england
- Flat grade share
- 84.9%
- Ascent
- 247 m
- Climb density
- 4.7 m/km
- Descent
- 246 m
- Net elevation
- 0 m
- Max absolute grade
- 8.4%
- Fee
- £71
As of
- Flat grade share
- 78.6%
- Ascent
- 1,034 m
- Climb density
- 6.4 m/km
- Descent
- 1,034 m
- Net elevation
- -0 m
- Max absolute grade
- 16.3%
- Fee
- Unavailable
As of
- Flat grade share
- 73.0%
- Ascent
- 3,407 m
- Climb density
- 8.2 m/km
- Descent
- 3,408 m
- Net elevation
- -1 m
- Max absolute grade
- 22.6%
- Fee
- Unavailable
As of
Autumn 100 Ultramarathonsouth-east
- Flat grade share
- 70.6%
- Ascent
- 1,380 m
- Climb density
- 8.6 m/km
- Descent
- 1,381 m
- Net elevation
- -1 m
- Max absolute grade
- 21.3%
- Fee
- £220
As of
- Flat grade share
- 68.1%
- Ascent
- 655 m
- Climb density
- 8.1 m/km
- Descent
- 656 m
- Net elevation
- -1 m
- Max absolute grade
- 9.6%
- Fee
- Unavailable
As of
The Wall Ultramarathonnorth-east
- Flat grade share
- 63.7%
- Ascent
- 1,140 m
- Climb density
- 10.2 m/km
- Descent
- 1,158 m
- Net elevation
- -18 m
- Max absolute grade
- 15.8%
- Fee
- £230
As of
- Flat grade share
- 60.6%
- Ascent
- 1,527 m
- Climb density
- 9.5 m/km
- Descent
- 1,518 m
- Net elevation
- 8 m
- Max absolute grade
- 15.2%
- Fee
- Unavailable
As of
- Flat grade share
- 60.3%
- Ascent
- 2,480 m
- Climb density
- 11.9 m/km
- Descent
- 2,479 m
- Net elevation
- 1 m
- Max absolute grade
- 39.1%
- Fee
- £255
As of
Spokane River Run Ultramarathonwashington
- Flat grade share
- 59.3%
- Ascent
- 925 m
- Climb density
- 18.5 m/km
- Descent
- 925 m
- Net elevation
- 0 m
- Max absolute grade
- 25.9%
- Fee
- Unavailable
As of
- Flat grade share
- 58.0%
- Ascent
- 755 m
- Climb density
- 11.9 m/km
- Descent
- 732 m
- Net elevation
- 23 m
- Max absolute grade
- 19.4%
- Fee
- Unavailable
As of
Race to the King Ultramarathonsouth-east
- Flat grade share
- 57.0%
- Ascent
- 1,434 m
- Climb density
- 13.9 m/km
- Descent
- 1,434 m
- Net elevation
- 0 m
- Max absolute grade
- 18.8%
- Fee
- £155
As of
Run Woodstock Ultramarathonmichigan
- Flat grade share
- 57.0%
- Ascent
- 1,764 m
- Climb density
- 11.0 m/km
- Descent
- 1,763 m
- Net elevation
- 1 m
- Max absolute grade
- 10.2%
- Fee
- Unavailable
As of
- Flat grade share
- 57.0%
- Ascent
- 2,551 m
- Climb density
- 30.2 m/km
- Descent
- 2,225 m
- Net elevation
- 326 m
- Max absolute grade
- Unavailable
- Fee
- Unavailable
As of
Lean Horse Ultra Marathonsouth-dakota
- Flat grade share
- 56.8%
- Ascent
- 1,791 m
- Climb density
- 11.1 m/km
- Descent
- 1,781 m
- Net elevation
- 10 m
- Max absolute grade
- 26.2%
- Fee
- Unavailable
As of
TARC Stone Cat Trail Festival Ultramarathonmassachusetts
- Flat grade share
- 56.7%
- Ascent
- 1,094 m
- Climb density
- 10.9 m/km
- Descent
- 1,095 m
- Net elevation
- -0 m
- Max absolute grade
- 17.4%
- Fee
- Unavailable
As of
Race to the Stones Ultramarathonsouth-east
- Flat grade share
- 55.7%
- Ascent
- 1,260 m
- Climb density
- 12.6 m/km
- Descent
- 1,228 m
- Net elevation
- 32 m
- Max absolute grade
- 19.4%
- Fee
- Unavailable
As of
- Flat grade share
- 53.2%
- Ascent
- 1,880 m
- Climb density
- 11.7 m/km
- Descent
- 1,952 m
- Net elevation
- -72 m
- Max absolute grade
- Unavailable
- Fee
- Unavailable
As of
Davos X-Trails Ultramarathonswitzerland
- Flat grade share
- 52.8%
- Ascent
- 3,372 m
- Climb density
- 49.3 m/km
- Descent
- 3,372 m
- Net elevation
- 0 m
- Max absolute grade
- Unavailable
- Fee
- Unavailable
As of
- Flat grade share
- 52.0%
- Ascent
- 1,087 m
- Climb density
- 13.5 m/km
- Descent
- 1,088 m
- Net elevation
- -1 m
- Max absolute grade
- 23.7%
- Fee
- £85
As of
- Flat grade share
- 50.7%
- Ascent
- 535 m
- Climb density
- 10.7 m/km
- Descent
- 892 m
- Net elevation
- -357 m
- Max absolute grade
- 22.4%
- Fee
- Unavailable
As of
- Flat grade share
- 50.1%
- Ascent
- 1,343 m
- Climb density
- 15.4 m/km
- Descent
- 1,333 m
- Net elevation
- 9 m
- Max absolute grade
- 21.0%
- Fee
- Unavailable
As of
- Flat grade share
- 49.9%
- Ascent
- 810 m
- Climb density
- 16.2 m/km
- Descent
- 799 m
- Net elevation
- 11 m
- Max absolute grade
- 35.7%
- Fee
- Unavailable
As of
Ice Age Trail 50 Ultramarathonwisconsin
- Flat grade share
- 47.8%
- Ascent
- 1,263 m
- Climb density
- 15.7 m/km
- Descent
- 1,263 m
- Net elevation
- 0 m
- Max absolute grade
- 22.6%
- Fee
- Unavailable
As of
- Flat grade share
- 47.7%
- Ascent
- 1,711 m
- Climb density
- 17.1 m/km
- Descent
- 1,734 m
- Net elevation
- -23 m
- Max absolute grade
- 29.3%
- Fee
- Unavailable
As of
- Flat grade share
- 46.7%
- Ascent
- 1,912 m
- Climb density
- 16.5 m/km
- Descent
- 1,939 m
- Net elevation
- -27 m
- Max absolute grade
- 44.7%
- Fee
- Unavailable
As of
Cairngorms Ultra Trailscotland
- Flat grade share
- 46.5%
- Ascent
- 948 m
- Climb density
- 15.8 m/km
- Descent
- 949 m
- Net elevation
- -1 m
- Max absolute grade
- 25.0%
- Fee
- £67
As of
- Flat grade share
- 46.0%
- Ascent
- 589 m
- Climb density
- 11.8 m/km
- Descent
- 588 m
- Net elevation
- 1 m
- Max absolute grade
- 8.9%
- Fee
- Unavailable
As of
- Flat grade share
- 45.8%
- Ascent
- 1,484 m
- Climb density
- 18.4 m/km
- Descent
- 1,484 m
- Net elevation
- -0 m
- Max absolute grade
- 36.5%
- Fee
- Unavailable
As of
- Flat grade share
- 45.8%
- Ascent
- 2,703 m
- Climb density
- 17.7 m/km
- Descent
- 2,748 m
- Net elevation
- -46 m
- Max absolute grade
- 32.9%
- Fee
- £157
As of
Norfolk Festival of Running (King's Lynn) Ultramarathoneast-of-england
- Flat grade share
- 45.4%
- Ascent
- 627 m
- Climb density
- 12.5 m/km
- Descent
- 628 m
- Net elevation
- -1 m
- Max absolute grade
- 9.8%
- Fee
- £38
As of
- Flat grade share
- 45.3%
- Ascent
- 3,626 m
- Climb density
- 22.5 m/km
- Descent
- 4,131 m
- Net elevation
- -504 m
- Max absolute grade
- Unavailable
- Fee
- Unavailable
As of
Chuckanut 50k Ultramarathonwashington
- Flat grade share
- 40.7%
- Ascent
- 1,416 m
- Climb density
- 28.3 m/km
- Descent
- 1,422 m
- Net elevation
- -5 m
- Max absolute grade
- 34.9%
- Fee
- Unavailable
As of
- Flat grade share
- 39.8%
- Ascent
- 5,472 m
- Climb density
- 33.5 m/km
- Descent
- 5,477 m
- Net elevation
- -4 m
- Max absolute grade
- 70.9%
- Fee
- Unavailable
As of
- Flat grade share
- 39.6%
- Ascent
- 2,890 m
- Climb density
- 18.0 m/km
- Descent
- 2,883 m
- Net elevation
- 7 m
- Max absolute grade
- 30.8%
- Fee
- Unavailable
As of
Chiltern Wonderland 50 Ultramarathonsouth-east
- Flat grade share
- 38.8%
- Ascent
- 1,699 m
- Climb density
- 21.0 m/km
- Descent
- 1,694 m
- Net elevation
- 5 m
- Max absolute grade
- 39.0%
- Fee
- £115
As of
- Flat grade share
- 38.1%
- Ascent
- 4,444 m
- Climb density
- 27.7 m/km
- Descent
- 4,445 m
- Net elevation
- -0 m
- Max absolute grade
- 42.6%
- Fee
- Unavailable
As of
Bimbler's Bluff 50K Ultramarathonconnecticut
- Flat grade share
- 37.9%
- Ascent
- 1,092 m
- Climb density
- 21.8 m/km
- Descent
- 1,092 m
- Net elevation
- -0 m
- Max absolute grade
- 39.4%
- Fee
- Unavailable
As of
- Flat grade share
- 37.2%
- Ascent
- 1,939 m
- Climb density
- 22.8 m/km
- Descent
- 1,758 m
- Net elevation
- 181 m
- Max absolute grade
- 29.5%
- Fee
- £125
As of
Two Tunnels Railway Races Ultramarathonsouth-west
- Flat grade share
- 35.9%
- Ascent
- 1,231 m
- Climb density
- 24.6 m/km
- Descent
- 1,229 m
- Net elevation
- 2 m
- Max absolute grade
- 17.3%
- Fee
- £65
As of
- Flat grade share
- 35.6%
- Ascent
- 1,916 m
- Climb density
- 27.1 m/km
- Descent
- 1,884 m
- Net elevation
- 31 m
- Max absolute grade
- 45.0%
- Fee
- Unavailable
As of
Arc of Attrition Ultramarathonsouth-west
- Flat grade share
- 35.4%
- Ascent
- 4,116 m
- Climb density
- 25.5 m/km
- Descent
- 4,038 m
- Net elevation
- 78 m
- Max absolute grade
- 43.9%
- Fee
- £239
As of
Gornergrat Zermatt Marathon Ultramarathonswitzerland
- Flat grade share
- 34.8%
- Ascent
- 2,408 m
- Climb density
- 52.8 m/km
- Descent
- 404 m
- Net elevation
- 2,004 m
- Max absolute grade
- 32.0%
- Fee
- Unavailable
As of
South Downs Way 100 Ultramarathonsouth-east
- Flat grade share
- 34.7%
- Ascent
- 3,410 m
- Climb density
- 21.2 m/km
- Descent
- 3,504 m
- Net elevation
- -94 m
- Max absolute grade
- 31.8%
- Fee
- £220
As of
Montane Winter Spine Race Ultramarathonnorth-east
- Flat grade share
- 34.1%
- Ascent
- 9,781 m
- Climb density
- 22.7 m/km
- Descent
- 9,901 m
- Net elevation
- -120 m
- Max absolute grade
- 49.7%
- Fee
- Unavailable
As of
- Flat grade share
- 32.8%
- Ascent
- 1,196 m
- Climb density
- 23.9 m/km
- Descent
- 1,195 m
- Net elevation
- 0 m
- Max absolute grade
- 24.5%
- Fee
- Unavailable
As of
- Flat grade share
- 32.6%
- Ascent
- 1,270 m
- Climb density
- 22.8 m/km
- Descent
- 1,269 m
- Net elevation
- 1 m
- Max absolute grade
- 29.0%
- Fee
- Unavailable
As of
Maah Daah Hey Trail Run (Medora) Ultramarathonnorth-dakota
- Flat grade share
- 31.8%
- Ascent
- 2,080 m
- Climb density
- 25.9 m/km
- Descent
- 2,085 m
- Net elevation
- -5 m
- Max absolute grade
- 27.7%
- Fee
- Unavailable
As of
- Flat grade share
- 30.8%
- Ascent
- 1,187 m
- Climb density
- 14.8 m/km
- Descent
- 1,182 m
- Net elevation
- 5 m
- Max absolute grade
- 23.2%
- Fee
- Unavailable
As of
- Flat grade share
- 30.4%
- Ascent
- 3,885 m
- Climb density
- 30.6 m/km
- Descent
- 3,920 m
- Net elevation
- -35 m
- Max absolute grade
- 99.4%
- Fee
- Unavailable
As of
- Flat grade share
- 30.1%
- Ascent
- 1,310 m
- Climb density
- 23.7 m/km
- Descent
- 1,310 m
- Net elevation
- 0 m
- Max absolute grade
- 28.3%
- Fee
- £71
As of
- Flat grade share
- 29.8%
- Ascent
- 1,641 m
- Climb density
- 23.8 m/km
- Descent
- 1,876 m
- Net elevation
- -235 m
- Max absolute grade
- 28.9%
- Fee
- £100
As of
- Flat grade share
- 27.7%
- Ascent
- 6,307 m
- Climb density
- 38.7 m/km
- Descent
- 6,305 m
- Net elevation
- 2 m
- Max absolute grade
- 66.6%
- Fee
- Unavailable
As of
- Flat grade share
- 27.5%
- Ascent
- 1,260 m
- Climb density
- 28.0 m/km
- Descent
- 1,465 m
- Net elevation
- -206 m
- Max absolute grade
- 56.7%
- Fee
- Unavailable
As of
- Flat grade share
- 27.4%
- Ascent
- 3,203 m
- Climb density
- 32.0 m/km
- Descent
- 3,175 m
- Net elevation
- 29 m
- Max absolute grade
- 41.7%
- Fee
- Unavailable
As of
- Flat grade share
- 26.0%
- Ascent
- 1,387 m
- Climb density
- 27.7 m/km
- Descent
- 1,394 m
- Net elevation
- -6 m
- Max absolute grade
- 31.6%
- Fee
- Unavailable
As of
Wild Duluth Races Ultramarathonminnesota
- Flat grade share
- 25.7%
- Ascent
- 2,801 m
- Climb density
- 28.0 m/km
- Descent
- 2,801 m
- Net elevation
- -0 m
- Max absolute grade
- 35.8%
- Fee
- Unavailable
As of
Worlds End Ultramarathonpennsylvania
- Flat grade share
- 25.4%
- Ascent
- 3,319 m
- Climb density
- 33.2 m/km
- Descent
- 3,320 m
- Net elevation
- -1 m
- Max absolute grade
- 37.1%
- Fee
- Unavailable
As of
Beachy Head Marathon Ultramarathonsouth-east
- Flat grade share
- 25.3%
- Ascent
- 1,308 m
- Climb density
- 24.9 m/km
- Descent
- 1,305 m
- Net elevation
- 2 m
- Max absolute grade
- 31.2%
- Fee
- Unavailable
As of
- Flat grade share
- 25.3%
- Ascent
- 3,481 m
- Climb density
- 34.9 m/km
- Descent
- 3,481 m
- Net elevation
- -0 m
- Max absolute grade
- 45.5%
- Fee
- Unavailable
As of
The Malvern Hills Ultrawest-midlands
- Flat grade share
- 24.3%
- Ascent
- 2,391 m
- Climb density
- 31.6 m/km
- Descent
- 2,391 m
- Net elevation
- 0 m
- Max absolute grade
- 36.3%
- Fee
- £95
As of
- Flat grade share
- 24.0%
- Ascent
- 4,799 m
- Climb density
- 29.6 m/km
- Descent
- 4,799 m
- Net elevation
- 0 m
- Max absolute grade
- 35.1%
- Fee
- Unavailable
As of
- Flat grade share
- 22.0%
- Ascent
- 7,564 m
- Climb density
- 33.8 m/km
- Descent
- 8,228 m
- Net elevation
- -664 m
- Max absolute grade
- 60.6%
- Fee
- Unavailable
As of
- Flat grade share
- 22.0%
- Ascent
- 4,282 m
- Climb density
- 85.6 m/km
- Descent
- 4,276 m
- Net elevation
- 5 m
- Max absolute grade
- Unavailable
- Fee
- Unavailable
As of
- Flat grade share
- 21.9%
- Ascent
- 3,838 m
- Climb density
- 34.1 m/km
- Descent
- 3,838 m
- Net elevation
- -0 m
- Max absolute grade
- 57.8%
- Fee
- Unavailable
As of
- Flat grade share
- 21.8%
- Ascent
- 2,541 m
- Climb density
- 46.8 m/km
- Descent
- 2,550 m
- Net elevation
- -9 m
- Max absolute grade
- 47.8%
- Fee
- Unavailable
As of
Tahoe 200 Endurance Run Ultramarathoncalifornia
- Flat grade share
- 21.7%
- Ascent
- 13,097 m
- Climb density
- 40.6 m/km
- Descent
- 13,099 m
- Net elevation
- -1 m
- Max absolute grade
- Unavailable
- Fee
- Unavailable
As of
- Flat grade share
- 21.6%
- Ascent
- 1,630 m
- Climb density
- 25.9 m/km
- Descent
- 1,638 m
- Net elevation
- -8 m
- Max absolute grade
- 28.1%
- Fee
- Unavailable
As of
Salomon Ultra-Trail Hungaryhungary
- Flat grade share
- 20.7%
- Ascent
- 3,938 m
- Climb density
- 35.2 m/km
- Descent
- 3,937 m
- Net elevation
- 0 m
- Max absolute grade
- 46.5%
- Fee
- Unavailable
As of
Sleeping Giant Trail Runs Ultramarathonconnecticut
- Flat grade share
- 20.5%
- Ascent
- 2,012 m
- Climb density
- 40.2 m/km
- Descent
- 2,017 m
- Net elevation
- -5 m
- Max absolute grade
- 54.7%
- Fee
- Unavailable
As of
Cascade Crest 100 Ultramarathonwashington
- Flat grade share
- 20.3%
- Ascent
- 6,253 m
- Climb density
- 38.9 m/km
- Descent
- 6,268 m
- Net elevation
- -15 m
- Max absolute grade
- 50.0%
- Fee
- Unavailable
As of
- Flat grade share
- 19.9%
- Ascent
- 6,789 m
- Climb density
- 61.7 m/km
- Descent
- 6,800 m
- Net elevation
- -11 m
- Max absolute grade
- 77.0%
- Fee
- Unavailable
As of
- Flat grade share
- 19.8%
- Ascent
- 4,960 m
- Climb density
- 30.8 m/km
- Descent
- 6,466 m
- Net elevation
- -1,506 m
- Max absolute grade
- 39.2%
- Fee
- Unavailable
As of
- Flat grade share
- 19.6%
- Ascent
- 11,159 m
- Climb density
- 69.3 m/km
- Descent
- 11,151 m
- Net elevation
- 8 m
- Max absolute grade
- Unavailable
- Fee
- Unavailable
As of
- Flat grade share
- 19.3%
- Ascent
- 2,126 m
- Climb density
- 41.7 m/km
- Descent
- 2,127 m
- Net elevation
- -0 m
- Max absolute grade
- 42.6%
- Fee
- Unavailable
As of
- Flat grade share
- 18.8%
- Ascent
- 6,952 m
- Climb density
- 38.2 m/km
- Descent
- 6,951 m
- Net elevation
- 2 m
- Max absolute grade
- 57.4%
- Fee
- Unavailable
As of
- Flat grade share
- 18.3%
- Ascent
- 5,183 m
- Climb density
- 48.9 m/km
- Descent
- 3,971 m
- Net elevation
- 1,213 m
- Max absolute grade
- 61.9%
- Fee
- Unavailable
As of
- Flat grade share
- 17.3%
- Ascent
- 5,117 m
- Climb density
- 31.2 m/km
- Descent
- 5,117 m
- Net elevation
- -0 m
- Max absolute grade
- 34.8%
- Fee
- Unavailable
As of
Dalmacija Ultra Trailcroatia
- Flat grade share
- 16.9%
- Ascent
- 4,619 m
- Climb density
- 44.3 m/km
- Descent
- 4,900 m
- Net elevation
- -281 m
- Max absolute grade
- 68.7%
- Fee
- Unavailable
As of
- Flat grade share
- 16.9%
- Ascent
- 839 m
- Climb density
- 16.8 m/km
- Descent
- 839 m
- Net elevation
- 0 m
- Max absolute grade
- 21.6%
- Fee
- Unavailable
As of
Tamalpa Headlands 50K Ultramarathoncalifornia
- Flat grade share
- 16.8%
- Ascent
- 1,966 m
- Climb density
- 39.3 m/km
- Descent
- 1,967 m
- Net elevation
- -1 m
- Max absolute grade
- 43.2%
- Fee
- Unavailable
As of
- Flat grade share
- 16.5%
- Ascent
- 6,328 m
- Climb density
- 57.5 m/km
- Descent
- 6,328 m
- Net elevation
- 1 m
- Max absolute grade
- 53.2%
- Fee
- Unavailable
As of
- Flat grade share
- 16.2%
- Ascent
- 4,300 m
- Climb density
- 42.4 m/km
- Descent
- 4,334 m
- Net elevation
- -34 m
- Max absolute grade
- 40.1%
- Fee
- Unavailable
As of
Manitou's Revenge Ultramarathonnew-york
- Flat grade share
- 16.0%
- Ascent
- 4,203 m
- Climb density
- 49.3 m/km
- Descent
- 4,549 m
- Net elevation
- -346 m
- Max absolute grade
- 67.3%
- Fee
- Unavailable
As of
- Flat grade share
- 15.8%
- Ascent
- 9,055 m
- Climb density
- 55.6 m/km
- Descent
- 9,055 m
- Net elevation
- -0 m
- Max absolute grade
- 59.5%
- Fee
- £259
As of
- Flat grade share
- 15.5%
- Ascent
- 5,502 m
- Climb density
- 45.8 m/km
- Descent
- 5,174 m
- Net elevation
- 328 m
- Max absolute grade
- 68.7%
- Fee
- Unavailable
As of
- Flat grade share
- 15.2%
- Ascent
- 2,716 m
- Climb density
- 33.8 m/km
- Descent
- 2,717 m
- Net elevation
- -1 m
- Max absolute grade
- 36.7%
- Fee
- Unavailable
As of
- Flat grade share
- 15.0%
- Ascent
- 5,188 m
- Climb density
- 51.9 m/km
- Descent
- 5,198 m
- Net elevation
- -10 m
- Max absolute grade
- 63.3%
- Fee
- Unavailable
As of
Ultra Trail Učkacroatia
- Flat grade share
- 14.8%
- Ascent
- 4,470 m
- Climb density
- 53.5 m/km
- Descent
- 4,470 m
- Net elevation
- 0 m
- Max absolute grade
- 51.7%
- Fee
- Unavailable
As of
- Flat grade share
- 14.7%
- Ascent
- 6,214 m
- Climb density
- 61.5 m/km
- Descent
- 6,213 m
- Net elevation
- 1 m
- Max absolute grade
- 91.9%
- Fee
- Unavailable
As of
- Flat grade share
- 14.6%
- Ascent
- 5,322 m
- Climb density
- 53.2 m/km
- Descent
- 3,876 m
- Net elevation
- 1,447 m
- Max absolute grade
- Unavailable
- Fee
- Unavailable
As of
- Flat grade share
- 14.2%
- Ascent
- 9,546 m
- Climb density
- 59.3 m/km
- Descent
- 9,547 m
- Net elevation
- -1 m
- Max absolute grade
- Unavailable
- Fee
- Unavailable
As of
- Flat grade share
- 13.9%
- Ascent
- 6,555 m
- Climb density
- 69.0 m/km
- Descent
- 6,553 m
- Net elevation
- 2 m
- Max absolute grade
- 73.3%
- Fee
- Unavailable
As of
- Flat grade share
- 13.4%
- Ascent
- 3,887 m
- Climb density
- 48.6 m/km
- Descent
- 3,794 m
- Net elevation
- 92 m
- Max absolute grade
- 45.6%
- Fee
- Unavailable
As of
Showing the top 100 of 110 qualifying races; use the distance catalogue for the full searchable list. Scores are out of 100 when present; route, elevation and cost figures are shown in their natural units.
How we ranked these
Races are ranked by Flat grade share. Score metrics use methodology scoring-methodology-v1.0. Elevation rankings use only trusted raw-elevation course profiles. A ranking is only published when at least five races qualify, so the table is never padded with thin data.
Route maps for this ranking
Common questions
What is the flattest ultramarathons?
Daytona 100 Ultramarathon (Jacksonville Beach to Ponce Inlet) ranks first by flat grade share, from 110 qualifying races compared under our published methodology.