- GAP factor
- -61894901.5%
- Ascent
- 4,282 m
- Climb density
- 85.6 m/km
- Descent
- 4,276 m
- Net elevation
- 5 m
- Max absolute grade
- 4914.5%
- Fee
- Unavailable
As of
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The lowest gap factor ultramarathons, ranked from trusted raw-elevation route profiles across 110 qualifying races.
Ranking current as ofSinks Canyon Rough and Tumble Trail Races leads this ranking on gap factor (-61894901.5%).
Compare Sinks Canyon Rough and Tumble Trail Races vs Davos X-Trails
| # | Race | GAP factor | Ascent | Climb density | Descent | Net elevation | Max absolute grade | Fee | As of |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Sinks Canyon Rough and Tumble Trail Races Ultramarathon - wyoming | -61894901.5% | 4,282 m | 85.6 m/km | 4,276 m | 5 m | 4914.5% | Unavailable | |
| 2 | Davos X-Trails Ultramarathon - switzerland | -7282928.1% | 3,372 m | 49.3 m/km | 3,372 m | 0 m | 3370.1% | Unavailable | |
| 3 | Hardrock Hundred Mile Endurance Run Ultramarathon - colorado | -1692.2% | 9,546 m | 59.3 m/km | 9,547 m | -1 m | 463.1% | Unavailable | |
| 4 | Foot Levelers Blue Ridge Marathon Ultramarathon - virginia | -36.0% | 2,551 m | 30.2 m/km | 2,225 m | 326 m | 144.6% | Unavailable | |
| 5 | McKenzie River Trail Run 50K Ultramarathon - oregon | -1.5% | 535 m | 10.7 m/km | 892 m | -357 m | 22.4% | Unavailable | |
| 6 | Daytona 100 Ultramarathon (Jacksonville Beach to Ponce Inlet) - florida | -0.0% | 39 m | 0.2 m/km | 40 m | -1 m | 1.7% | Unavailable | |
| 7 | Stort30 Ultramarathon - east-of-england | 0.1% | 99 m | 2.0 m/km | 98 m | 0 m | 7.1% | £55 | |
| 8 | Bath & Bristol Railway Races Ultramarathon - south-west | 0.1% | 136 m | 2.7 m/km | 135 m | 1 m | 6.7% | £65 | |
| 9 | Endurancelife Suffolk (Dunwich) Ultramarathon - east-of-england | 0.3% | 247 m | 4.7 m/km | 246 m | 0 m | 8.4% | £71 | |
| 10 | Thames Path 100 Ultramarathon - south-east | 0.4% | 222 m | 1.4 m/km | 174 m | 48 m | 11.9% | £225 | |
| 11 | The Pistol Ultra (Alcoa) - tennessee | 0.4% | 696 m | 4.3 m/km | 696 m | -0 m | 12.1% | Unavailable | |
| 12 | North Downs Way 100 Ultramarathon - south-east | 0.4% | 155 m | 0.9 m/km | 95 m | 59 m | 20.8% | £220 | |
| 13 | Kettle Moraine 100 Endurance Runs Ultramarathon - wisconsin | 0.6% | 1,034 m | 6.4 m/km | 1,034 m | -0 m | 16.3% | Unavailable | |
| 14 | Flint Hills 50 and Marathon Ultramarathon - kansas | 0.6% | 655 m | 8.1 m/km | 656 m | -1 m | 9.6% | Unavailable | |
| 15 | NN Ultrabalaton Ultramarathon - hungary | 1.0% | 3,407 m | 8.2 m/km | 3,408 m | -1 m | 22.6% | Unavailable | |
| 16 | Autumn 100 Ultramarathon - south-east | 1.0% | 1,380 m | 8.6 m/km | 1,381 m | -1 m | 21.3% | £220 | |
| 17 | Gravel Worlds Run Series (Lincoln) Ultramarathon - nebraska | 1.1% | 589 m | 11.8 m/km | 588 m | 1 m | 8.9% | Unavailable | |
| 18 | The Wall Ultramarathon - north-east | 1.2% | 1,140 m | 10.2 m/km | 1,158 m | -18 m | 15.8% | £230 | |
| 19 | The Hawk Hundred (Lawrence) Ultramarathon - kansas | 1.2% | 1,527 m | 9.5 m/km | 1,518 m | 8 m | 15.2% | Unavailable | |
| 20 | Lean Horse Ultra Marathon - south-dakota | 1.3% | 1,791 m | 11.1 m/km | 1,781 m | 10 m | 26.2% | Unavailable | |
| 21 | Run Woodstock Ultramarathon - michigan | 1.3% | 1,764 m | 11.0 m/km | 1,763 m | 1 m | 10.2% | Unavailable | |
| 22 | TARC Stone Cat Trail Festival Ultramarathon - massachusetts | 1.4% | 1,094 m | 10.9 m/km | 1,095 m | -0 m | 17.4% | Unavailable | |
| 23 | Norfolk Festival of Running (King's Lynn) Ultramarathon - east-of-england | 1.6% | 627 m | 12.5 m/km | 628 m | -1 m | 9.8% | £38 | |
| 24 | Connemara International Marathon (Connemarathon) Ultramarathon - ireland | 1.8% | 755 m | 11.9 m/km | 732 m | 23 m | 19.4% | Unavailable | |
| 25 | Race to the Stones Ultramarathon - south-east | 1.9% | 1,260 m | 12.6 m/km | 1,228 m | 32 m | 19.4% | Unavailable | |
| 26 | Running with the Devil (Las Vegas) Ultramarathon - nevada | 2.0% | 839 m | 16.8 m/km | 839 m | 0 m | 21.6% | Unavailable | |
| 27 | Gower Coastal Trail Races Ultramarathon - wales | 2.0% | 1,087 m | 13.5 m/km | 1,088 m | -1 m | 23.7% | £85 | |
| 28 | Ring O' Fire Ultramarathon - wales | 2.0% | 2,480 m | 11.9 m/km | 2,479 m | 1 m | 39.1% | £255 | |
| 29 | Race to the King Ultramarathon - south-east | 2.6% | 1,434 m | 13.9 m/km | 1,434 m | 0 m | 18.8% | £155 | |
| 30 | Reims Champagne Run Ultramarathon - france | 2.8% | 1,343 m | 15.4 m/km | 1,333 m | 9 m | 21.0% | Unavailable | |
| 31 | Cairngorms Ultra Trail - scotland | 2.8% | 948 m | 15.8 m/km | 949 m | -1 m | 25.0% | £67 | |
| 32 | Ice Age Trail 50 Ultramarathon - wisconsin | 2.9% | 1,263 m | 15.7 m/km | 1,263 m | 0 m | 22.6% | Unavailable | |
| 33 | Lake Tahoe Marathon Ultramarathon - nevada | 3.1% | 1,912 m | 16.5 m/km | 1,939 m | -27 m | 44.7% | Unavailable | |
| 34 | Holiday Lake 50K (Appomattox) Ultramarathon - virginia | 3.2% | 810 m | 16.2 m/km | 799 m | 11 m | 35.7% | Unavailable | |
| 35 | West Highland Way Race Ultramarathon - scotland | 3.5% | 2,703 m | 17.7 m/km | 2,748 m | -46 m | 32.9% | £157 | |
| 36 | HOKA Bandera Endurance Trail Race Ultramarathon - texas | 3.5% | 1,711 m | 17.1 m/km | 1,734 m | -23 m | 29.3% | Unavailable | |
| 37 | Mohican Trail 100 Mile Run Ultramarathon - ohio | 3.7% | 2,890 m | 18.0 m/km | 2,883 m | 7 m | 30.8% | Unavailable | |
| 38 | Spokane River Run Ultramarathon - washington | 3.8% | 925 m | 18.5 m/km | 925 m | 0 m | 25.9% | Unavailable | |
| 39 | South Downs Way 100 Ultramarathon - south-east | 4.1% | 3,410 m | 21.2 m/km | 3,504 m | -94 m | 31.8% | £220 | |
| 40 | Minnesota Voyageur Trail Ultramarathon - minnesota | 4.1% | 1,484 m | 18.4 m/km | 1,484 m | -0 m | 36.5% | Unavailable | |
| 41 | Devil o' the Highlands Footrace Ultramarathon - scotland | 4.4% | 1,641 m | 23.8 m/km | 1,876 m | -235 m | 28.9% | £100 | |
| 42 | Bimbler's Bluff 50K Ultramarathon - connecticut | 4.7% | 1,092 m | 21.8 m/km | 1,092 m | -0 m | 39.4% | Unavailable | |
| 43 | Maah Daah Hey Trail Run (Medora) Ultramarathon - north-dakota | 4.9% | 2,080 m | 25.9 m/km | 2,085 m | -5 m | 27.7% | Unavailable | |
| 44 | Chiltern Wonderland 50 Ultramarathon - south-east | 5.0% | 1,699 m | 21.0 m/km | 1,694 m | 5 m | 39.0% | £115 | |
| 45 | Endurancelife Pembrokeshire Ultramarathon - wales | 5.2% | 1,270 m | 22.8 m/km | 1,269 m | 1 m | 29.0% | Unavailable | |
| 46 | Montane Winter Spine Race Ultramarathon - north-east | 5.4% | 9,781 m | 22.7 m/km | 9,901 m | -120 m | 49.7% | Unavailable | |
| 47 | Sheltowee Trace Ultras (Big Turtle Trail Runs), Morehead - kentucky | 5.5% | 1,187 m | 14.8 m/km | 1,182 m | 5 m | 23.2% | Unavailable | |
| 48 | Tollymore Extreme (Tollymore Trail Marathon), Newcastle Ultramarathon - northern-ireland | 5.5% | 1,630 m | 25.9 m/km | 1,638 m | -8 m | 28.1% | Unavailable | |
| 49 | Two Tunnels Railway Races Ultramarathon - south-west | 5.6% | 1,231 m | 24.6 m/km | 1,229 m | 2 m | 17.3% | £65 | |
| 50 | Beachy Head Marathon Ultramarathon - south-east | 5.7% | 1,308 m | 24.9 m/km | 1,305 m | 2 m | 31.2% | Unavailable | |
| 51 | Endurancelife Coastal Trail Series - North York Moors (Ravenscar) Ultramarathon - yorkshire | 5.7% | 1,310 m | 23.7 m/km | 1,310 m | 0 m | 28.3% | £71 | |
| 52 | Western States Endurance Run Ultramarathon - california | 5.7% | 4,960 m | 30.8 m/km | 6,466 m | -1,506 m | 39.2% | Unavailable | |
| 53 | Tecumseh Trail Marathon (Tecumseh Trail Challenge), Nashville Indiana Ultramarathon - indiana | 5.8% | 1,196 m | 23.9 m/km | 1,195 m | 0 m | 24.5% | Unavailable | |
| 54 | Highland Fling Race (Milngavie) Ultramarathon - scotland | 6.1% | 1,939 m | 22.8 m/km | 1,758 m | 181 m | 29.5% | £125 | |
| 55 | Rocky Raccoon 100 (Huntsville) Ultramarathon - texas | 6.2% | 1,880 m | 11.7 m/km | 1,952 m | -72 m | 108.6% | Unavailable | |
| 56 | Ethias 15 km de Liège Métropole Ultramarathon - belgium | 6.4% | 1,260 m | 28.0 m/km | 1,465 m | -206 m | 56.7% | Unavailable | |
| 57 | Patapsco Valley 50K Ultramarathon - maryland | 6.6% | 1,387 m | 27.7 m/km | 1,394 m | -6 m | 31.6% | Unavailable | |
| 58 | Wasatch Front 100 Mile Endurance Run Ultramarathon - utah | 6.7% | 1,256 m | 7.8 m/km | 0 m | 1,256 m | 58.7% | Unavailable | |
| 59 | Arc of Attrition Ultramarathon - south-west | 7.2% | 4,116 m | 25.5 m/km | 4,038 m | 78 m | 43.9% | £239 | |
| 60 | Wild Duluth Races Ultramarathon - minnesota | 8.0% | 2,801 m | 28.0 m/km | 2,801 m | -0 m | 35.8% | Unavailable | |
| 61 | Massanutten Mountain Trails 100 Mile Run Ultramarathon - virginia | 8.1% | 4,799 m | 29.6 m/km | 4,799 m | 0 m | 35.1% | Unavailable | |
| 62 | Endurancelife Classic Quarter (Cornwall Coastal Ultra) - south-west | 8.3% | 1,916 m | 27.1 m/km | 1,884 m | 31 m | 45.0% | Unavailable | |
| 63 | Tahoe Rim Trail Endurance Runs Ultramarathon - nevada | 8.4% | 5,117 m | 31.2 m/km | 5,117 m | -0 m | 34.8% | Unavailable | |
| 64 | The Malvern Hills Ultra - west-midlands | 8.5% | 2,391 m | 31.6 m/km | 2,391 m | 0 m | 36.3% | £95 | |
| 65 | Chuckanut 50k Ultramarathon - washington | 8.6% | 1,416 m | 28.3 m/km | 1,422 m | -5 m | 34.9% | Unavailable | |
| 66 | Silver State 50/50 (Reno) Ultramarathon - nevada | 8.6% | 2,716 m | 33.8 m/km | 2,717 m | -1 m | 36.7% | Unavailable | |
| 67 | Leadville Trail 100 Run Ultramarathon - colorado | 8.9% | 4,444 m | 27.7 m/km | 4,445 m | -0 m | 42.6% | Unavailable | |
| 68 | Kia Fjällmaraton (Fjällmaratonveckan), Årefjällen Ultramarathon - sweden | 9.8% | 3,203 m | 32.0 m/km | 3,175 m | 29 m | 41.7% | Unavailable | |
| 69 | Worlds End Ultramarathon - pennsylvania | 10.4% | 3,319 m | 33.2 m/km | 3,320 m | -1 m | 37.1% | Unavailable | |
| 70 | Salomon Ultra-Trail Hungary - hungary | 10.8% | 3,938 m | 35.2 m/km | 3,937 m | 0 m | 46.5% | Unavailable | |
| 71 | Volvic Volcanic Experience (VVX) Ultramarathon - france | 11.0% | 7,564 m | 33.8 m/km | 8,228 m | -664 m | 60.6% | Unavailable | |
| 72 | Wicklow Way Race Ultramarathon - ireland | 11.0% | 3,885 m | 30.6 m/km | 3,920 m | -35 m | 99.4% | Unavailable | |
| 73 | Scout Mountain Ultras - idaho | 11.3% | 6,262 m | 38.0 m/km | 6,271 m | -8 m | 39.4% | Unavailable | |
| 74 | Tamalpa Headlands 50K Ultramarathon - california | 11.6% | 1,966 m | 39.3 m/km | 1,967 m | -1 m | 43.2% | Unavailable | |
| 75 | Gorge Waterfalls 100K Ultramarathon - oregon | 12.4% | 3,481 m | 34.9 m/km | 3,481 m | -0 m | 45.5% | Unavailable | |
| 76 | Cascade Crest 100 Ultramarathon - washington | 13.8% | 6,253 m | 38.9 m/km | 6,268 m | -15 m | 50.0% | Unavailable | |
| 77 | Sleeping Giant Trail Runs Ultramarathon - connecticut | 14.9% | 2,012 m | 40.2 m/km | 2,017 m | -5 m | 54.7% | Unavailable | |
| 78 | ROUT Classic 100 Miles (Rodopi Ultra Trail) - greece | 15.5% | 6,952 m | 38.2 m/km | 6,951 m | 2 m | 57.4% | Unavailable | |
| 79 | SciaccheTrail – Cinque Terre Ultra Trail - italy | 15.5% | 4,300 m | 42.4 m/km | 4,334 m | -34 m | 40.1% | Unavailable | |
| 80 | Ultra Trail Vipava Valley (UTVV), Ajdovščina - slovenia | 15.7% | 6,307 m | 38.7 m/km | 6,305 m | 2 m | 66.6% | Unavailable | |
| 81 | Endurancelife Peak District (Castleton) Ultramarathon - east-midlands | 16.2% | 2,126 m | 41.7 m/km | 2,127 m | -0 m | 42.6% | Unavailable | |
| 82 | The Arctic Triple // Lofoten Ultra-Trail - norway | 16.9% | 5,472 m | 33.5 m/km | 5,477 m | -4 m | 70.9% | Unavailable | |
| 83 | Tatra SkyMarathon (Zakopane) Ultramarathon - poland | 17.3% | 5,502 m | 45.8 m/km | 5,174 m | 328 m | 68.7% | Unavailable | |
| 84 | Dalmacija Ultra Trail - croatia | 19.0% | 4,619 m | 44.3 m/km | 4,900 m | -281 m | 68.7% | Unavailable | |
| 85 | adidas Innsbruck Alpine Trailrun Festival Ultramarathon - austria | 19.4% | 3,838 m | 34.1 m/km | 3,838 m | -0 m | 57.8% | Unavailable | |
| 86 | Bieg Rzeźnika (Cisna) Ultramarathon - poland | 19.7% | 3,887 m | 48.6 m/km | 3,794 m | 92 m | 45.6% | Unavailable | |
| 87 | Soča Outdoor Festival Ultramarathon - slovenia | 19.7% | 2,541 m | 46.8 m/km | 2,550 m | -9 m | 47.8% | Unavailable | |
| 88 | Douro Ultra Trail (Peso da Régua) - portugal | 23.1% | 5,188 m | 51.9 m/km | 5,198 m | -10 m | 63.3% | Unavailable | |
| 89 | Ultra Trail Učka - croatia | 23.6% | 4,470 m | 53.5 m/km | 4,470 m | 0 m | 51.7% | Unavailable | |
| 90 | FUGA Penyagolosa Trails (Castelló) Ultramarathon - spain | 23.8% | 5,183 m | 48.9 m/km | 3,971 m | 1,213 m | 61.9% | Unavailable | |
| 91 | Chudy Wawrzyniec (Rajcza) Ultramarathon - poland | 24.8% | 5,580 m | 54.7 m/km | 5,522 m | 58 m | 56.7% | Unavailable | |
| 92 | Manitou's Revenge Ultramarathon - new-york | 25.0% | 4,203 m | 49.3 m/km | 4,549 m | -346 m | 67.3% | Unavailable | |
| 93 | Transvulcania Ultramarathon - spain | 25.1% | 4,128 m | 56.5 m/km | 3,796 m | 332 m | 38.8% | Unavailable | |
| 94 | HOKA UTMB Mont-Blanc Ultramarathon - france | 27.5% | 9,703 m | 55.8 m/km | 9,702 m | 1 m | 72.1% | Unavailable | |
| 95 | Tenerife Bluetrail by UTMB Ultramarathon - spain | 27.7% | 5,798 m | 52.7 m/km | 5,790 m | 8 m | 75.0% | Unavailable | |
| 96 | Ultra-Trail Snowdonia by UTMB - wales | 27.8% | 9,055 m | 55.6 m/km | 9,055 m | -0 m | 59.5% | £259 | |
| 97 | Eiger Ultra Trail by UTMB - switzerland | 29.8% | 6,188 m | 61.3 m/km | 6,187 m | 0 m | 63.3% | Unavailable | |
| 98 | The North Face Grossglockner Ultra-Trail - austria | 29.9% | 6,328 m | 57.5 m/km | 6,328 m | 1 m | 53.2% | Unavailable | |
| 99 | Dolomiti di Brenta Trail (Molveno) Ultramarathon - italy | 31.6% | 4,066 m | 63.5 m/km | 4,087 m | -21 m | 101.0% | Unavailable | |
| 100 | Podbrdo Trail Running Festival Ultramarathon - slovenia | 31.9% | 6,439 m | 60.1 m/km | 6,465 m | -26 m | 62.9% | Unavailable |
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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.
Races are ranked by GAP factor. 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.
Sinks Canyon Rough and Tumble Trail Races Ultramarathon ranks first by gap factor, from 110 qualifying races compared under our published methodology.