01 AUGMAP
Summer Breeze Half Marathon (San Leandro)
California
Event weekend
- Map
- Profile
- Character
GPS trace: 1,384 pts / brazenracing.com
- Pancake Flat
- Coastal
- Waterfront
- Parkland
- Ascent
- 0 m
- m/km
- 0.0 m/km
100.0%Flat grade share
Mapped route ranking
Flattest half marathon route maps
191 mapped half marathon race pages ranked by flat grade share. Only races with stored route geometry and the required route metric qualify.
Which mapped route leads?
Summer Breeze Half Marathon (San Leandro) currently leads this mapped-route ranking on flat grade share (100.0%).
191Qualifying routes191Elevation profiles100%Profile share100.0%Top metric
Ranked mapped pages
Featured half marathon route maps
13 SEPMAP
Vale of York Half Marathon
Yorkshire
Event weekend
- Map
- Profile
- Cost
- Character
GPS trace: 316 pts / evensplits.events
- Pancake Flat
- Countryside
- Parkland
- Forest
- Ascent
- 27 m
- m/km
- 1.3 m/km
100.0%Flat grade share£28Entry
11 APRMAP
Zürich Marathon
Switzerland
Event weekend
- Map
- Profile
- Character
GPS trace: 528 pts / www.zuerichmarathon.ch
- City
- Lakeside
- Historic
- Big City
- Ascent
- 21 m
- m/km
- 1.0 m/km
99.8%Flat grade share
11 OCTMAP
Bath & Bristol Railway Races
South West
Event weekend
- Map
- Profile
- Cost
- Character
GPS trace: 357 pts / www.relishrunningraces.com
- Historic
- Riverside
- Countryside
- City
- Ascent
- 33 m
- m/km
- 1.6 m/km
99.7%Flat grade share£46Entry
01 NOVMAP
ATW Bedford 10k & Half Marathon
East Of England
Event weekend
- Map
- Profile
- Character
GPS trace: 537 pts / www.atwevents.co.uk
- Pancake Flat
- Parkland
- Riverside
- Lakeside
- Ascent
- 15 m
- m/km
- 0.7 m/km
99.5%Flat grade share
13 DECMAP
Naturosa Catania Marathon
Italy
Event weekend
- Map
- Profile
- Character
GPS trace: 238 pts / www.maratonadicatania.it
- Coastal
- City
- Waterfront
- Historic
- Ascent
- 11 m
- m/km
- 0.5 m/km
99.3%Flat grade share
10 MAYMAP
Medio Maratón de Santander
Spain
Event weekend
- Map
- Profile
- Character
GPS trace: 150 pts / mediamaratonsantander.com
- Flat
- Coastal
- City
- Waterfront
- Ascent
- 28 m
- m/km
- 1.3 m/km
98.0%Flat grade share
27 FEBMAP
The Woodlands Marathon
Texas
Event weekend
- Map
- Profile
- Character
GPS trace: 224 pts / www.thewoodlandsmarathon.com
- Parkland
- Forest
- City
- Waterfront
- Ascent
- 52 m
- m/km
- 2.5 m/km
97.9%Flat grade share
27 FEBMAP
Novant Health Wilmington Marathon
North Carolina
Event weekend
- Map
- Profile
- Character
GPS trace: 102 pts / wilmingtonncmarathon.com
- Pancake Flat
- Coastal
- Riverside
- Waterfront
- Ascent
- 46 m
- m/km
- 2.2 m/km
97.6%Flat grade share
20 JUNMAP
Tirol läuft (Innsbruck)
Austria
Event weekend
- Map
- Profile
- Character
GPS trace: 494 pts / xn--tirol-luft-w5a.com
- Flat
- Riverside
- City
- Waterfront
- Ascent
- 40 m
- m/km
- 1.9 m/km
97.0%Flat grade share
14 FEBMAP
ZeroWind Romeo&Giulietta Run Half Marathon (Verona)
Italy
Event weekend
- Map
- Profile
- Character
GPS trace: 266 pts / www.romeoegiuliettarunhalfmarathon.it
- Flat
- City
- Historic
- Riverside
- Ascent
- 55 m
- m/km
- 2.6 m/km
96.7%Flat grade share
Half MarathonMAP
Mississippi River Marathon
Mississippi
- Map
- Profile
- Character
GPS trace: 242 pts / msrivermarathon.raceroster.com
- Countryside
- Lakeside
- Riverside
- City
- Ascent
- 36 m
- m/km
- 1.7 m/km
96.4%Flat grade share
11 APRMAP
Martian Invasion of Races
Michigan
Event weekend
- Map
- Profile
- Character
GPS trace: 275 pts / www.martianraces.com
- Pancake Flat
- Parkland
- City
- Riverside
- Ascent
- 58 m
- m/km
- 2.7 m/km
96.1%Flat grade share
21 MARMAP
Mizuno Swansea Half Marathon
Wales
Event weekend
- Map
- Profile
- Character
GPS trace: 1,141 pts / www.swanseahalfmarathon.co.uk
- Pancake Flat
- Coastal
- City
- Waterfront
- Ascent
- 44 m
- m/km
- 2.1 m/km
96.0%Flat grade share
25 JULMAP
Idaho Falls Marathon
Idaho
Event weekend
- Map
- Profile
- Character
GPS trace: 366 pts / www.idahofallsmarathon.com
- Flat
- Waterfront
- Countryside
- Riverside
- Ascent
- 50 m
- m/km
- 2.4 m/km
96.0%Flat grade share
Half MarathonMAP
Great Smoky Mountains Half Marathon
Tennessee
- Map
- Profile
- Character
GPS trace: 375 pts / www.vacationraces.com
- Gently Rolling
- Mountain
- Countryside
- Riverside
- Ascent
- 99 m
- m/km
- 4.7 m/km
95.6%Flat grade share
17 OCTMAP
NLB Ljubljana Marathon
Slovenia
Event weekend
- Map
- Profile
- Character
GPS trace: 229 pts / ljubljanskimaraton.si
- City
- Historic
- Riverside
- Parkland
- Ascent
- 53 m
- m/km
- 2.5 m/km
94.6%Flat grade share
14 JUNMAP
Cheltenham Running Festival
South West
Event weekend
- Map
- Profile
- Cost
- Character
GPS trace: 593 pts / www.cheltenhamrunningfestival.com
- Flat
- Parkland
- Countryside
- Historic
- Ascent
- 70 m
- m/km
- 3.3 m/km
93.6%Flat grade share£38Entry
18 APRMAP
Vienna City Marathon
Austria
Event weekend
- Map
- Profile
- Character
GPS trace: 349 pts / www.vienna-marathon.com
- City
- Riverside
- Historic
- Parkland
- Ascent
- 71 m
- m/km
- 3.4 m/km
93.2%Flat grade share
31 MAYMAP
Hartlepool Half Marathon
North East
Event weekend
- Map
- Profile
- Character
GPS trace: 587 pts / www.activehartlepool.co.uk
- Flat
- Coastal
- Waterfront
- City
- Ascent
- 50 m
- m/km
- 2.4 m/km
92.9%Flat grade share
06 SEPMAP
Bear Trail Half Marathon & 10K
Delaware
Event weekend
- Map
- Profile
- Character
GPS trace: 1,050 pts / www.rivalraceseries.com
- Flat
- Forest
- Waterfront
- Parkland
- Ascent
- 73 m
- m/km
- 3.5 m/km
92.2%Flat grade share
01 MAYMAP
Maine Coast Marathon
Maine
Event weekend
- Map
- Profile
- Character
GPS trace: 378 pts / www.mainecoastmarathon.com
- Flat
- Coastal
- Desert
- Waterfront
- Ascent
- 68 m
- m/km
- 3.2 m/km
92.1%Flat grade share
28 APRMAP
Nagyerdei Terep Maraton (Debrecen)
Hungary
Event weekend
- Map
- Profile
- Character
GPS trace: 1,189 pts / nagyerdeimaraton.hu
- Parkland
- Forest
- Trail
- Community
- Ascent
- 72 m
- m/km
- 3.4 m/km
91.7%Flat grade share
25 APRMAP
Haspa Marathon Hamburg
Germany
Event weekend
- Map
- Profile
- Character
GPS trace: 490 pts / haspa-marathon-hamburg.de
- City
- Riverside
- Lakeside
- Waterfront
- Ascent
- 76 m
- m/km
- 3.6 m/km
91.6%Flat grade share
10 APRMAP
University of Charleston Marathon (Charleston, WV)
West Virginia
Event weekend
- Map
- Profile
- Character
GPS trace: 377 pts / www.ucwv.edu
- City
- Waterfront
- Riverside
- Historic
- Ascent
- 74 m
- m/km
- 3.5 m/km
91.1%Flat grade share
13 SEPMAP
Great North Run
North East
Event weekend
- Map
- Profile
- Cost
- Character
GPS trace: 367 pts / en.wikipedia.org
- Gently Rolling
- Coastal
- Riverside
- City
- Ascent
- 80 m
- m/km
- 3.8 m/km
90.8%Flat grade share£68Entry
15 NOVMAP
Parkway Subaru Battleship Half Marathon & GFL 10K|5K (Wilmington)
North Carolina
Event weekend
- Map
- Profile
- Character
GPS trace: 335 pts / www.battleshiphalfmarathon.com
- Flat
- Waterfront
- City
- Lakeside
- Ascent
- 84 m
- m/km
- 4.0 m/km
90.7%Flat grade share
20 DECMAP
Maratona di Pisa
Italy
Event weekend
- Map
- Profile
- Character
GPS trace: 262 pts / maratonadipisa.com
- Flat
- City
- Historic
- Riverside
- Ascent
- 72 m
- m/km
- 3.4 m/km
90.6%Flat grade share
18 JANMAP
Spurs Austin International Half (fka 3M Half Marathon)
Texas
Event weekend
- Map
- Profile
- Character
GPS trace: 506 pts / downhilltodowntown.com
- Net Downhill
- City
- Countryside
- Riverside
- Ascent
- 42 m
- m/km
- 2.0 m/km
90.6%Flat grade share
13 SEPMAP
Buffalo Stampede Half Marathon (Kearney)
Nebraska
Event weekend
- Map
- Profile
- Character
GPS trace: 550 pts / kearneyymca.org
- Flat
- City
- Waterfront
- Riverside
- Ascent
- 75 m
- m/km
- 3.6 m/km
90.2%Flat grade share
02 MAYMAP
Belfast City Marathon
Northern Ireland
Event weekend
- Map
- Profile
- Cost
- Character
GPS trace: 487 pts / www.belfastcitymarathon.com
- City
- Riverside
- Parkland
- Waterfront
- Ascent
- 75 m
- m/km
- 3.6 m/km
90.1%Flat grade share£42Entry
04 APRMAP
Mein Freiburg Marathon
Germany
Event weekend
- Map
- Profile
- Character
GPS trace: 505 pts / www.mein-freiburgmarathon.de
- City
- Forest
- Waterfront
- Historic
- Ascent
- 105 m
- m/km
- 5.0 m/km
89.9%Flat grade share
Half MarathonMAP
Indiana Women's Running Festival (Indy Women's Half Marathon), Carmel
Indiana
Race date needs a fresh check
- Map
- Profile
- Character
GPS trace: 561 pts / www.womensrunningfestival.com
- Flat
- Parkland
- City
- Mixed
- Ascent
- 86 m
- m/km
- 4.1 m/km
89.7%Flat grade share
03 MAYMAP
Bari Med Marathon
Italy
Event weekend
- Map
- Profile
- Character
GPS trace: 268 pts / www.barimedmarathon.it
- Flat
- Coastal
- Waterfront
- Historic
- Ascent
- 97 m
- m/km
- 4.6 m/km
89.0%Flat grade share
20 SEPMAP
Belfast City Half Marathon
Northern Ireland
Event weekend
- Map
- Profile
- Cost
- Character
GPS trace: 740 pts / belfastcitymarathon.com
- Flat
- City
- Parkland
- Waterfront
- Ascent
- 88 m
- m/km
- 4.2 m/km
89.0%Flat grade share£50Entry
18 APRMAP
Charlotte Racefest at SouthPark Half Marathon and 10K
North Carolina
Event weekend
- Map
- Profile
- Character
GPS trace: 1,289 pts / charlotteracefest.raceroster.com
- Rolling
- Parkland
- City
- Road
- Ascent
- 70 m
- m/km
- 3.3 m/km
88.8%Flat grade share
25 APRMAP
Trieste Spring Run
Italy
Event weekend
- Map
- Profile
- Character
GPS trace: 204 pts / triestespringrun.com
- Flat
- Coastal
- Waterfront
- City
- Ascent
- 63 m
- m/km
- 3.0 m/km
88.5%Flat grade share
14 MARMAP
Cambridge Half Marathon
East Of England
Event weekend
- Map
- Profile
- Character
GPS trace: 1,210 pts / www.cambridgehalfmarathon.com
- Pancake Flat
- Riverside
- City
- Historic
- Ascent
- 95 m
- m/km
- 4.5 m/km
88.2%Flat grade share
16 MAYMAP
Cleveland Marathon
Ohio
Event weekend
- Map
- Profile
- Character
GPS trace: 444 pts / www.clevelandmarathon.com
- City
- Waterfront
- Lakeside
- Riverside
- Ascent
- 102 m
- m/km
- 4.8 m/km
87.9%Flat grade share
07 MARMAP
Termal Bologna Marathon
Italy
Event weekend
- Map
- Profile
- Character
GPS trace: 977 pts / www.bolognamarathon.run
- City
- Waterfront
- Historic
- Parkland
- Ascent
- 121 m
- m/km
- 5.7 m/km
87.6%Flat grade share
17 MAYMAP
MountainOne Steel Rail Races (Adams)
Massachusetts
Event weekend
- Map
- Profile
- Character
GPS trace: 807 pts / steelrailraces.com
- Countryside
- Waterfront
- Lakeside
- Riverside
- Ascent
- 114 m
- m/km
- 5.4 m/km
87.5%Flat grade share
29 MARMAP
Stormin' Norman Run
Oklahoma
Event weekend
- Map
- Profile
- Character
GPS trace: 706 pts / www.storminnormanrun.com
- Rolling
- City
- Historic
- Road
- Ascent
- 94 m
- m/km
- 4.4 m/km
87.1%Flat grade share
29 MARMAP
The Fury Run (Stormin' Norman Run), Norman
Oklahoma
Event weekend
- Map
- Profile
- Character
GPS trace: 706 pts / www.thefuryrun.com
- Gently Rolling
- Countryside
- City
- Historic
- Ascent
- 94 m
- m/km
- 4.4 m/km
87.1%Flat grade share
29 MARMAP
Debrecen Maraton
Hungary
Event weekend
- Map
- Profile
- Character
GPS trace: 934 pts / debrecenmaraton.hu
- Pancake Flat
- City
- Forest
- Parkland
- Ascent
- 94 m
- m/km
- 4.5 m/km
86.8%Flat grade share
Half MarathonMAP
Stuttgart-Lauf
Germany
- Map
- Profile
- Character
GPS trace: 330 pts / stuttgart-lauf.de
- Flat
- Riverside
- Moorland
- Vineyard
- Ascent
- 100 m
- m/km
- 4.7 m/km
86.7%Flat grade share
25 APRMAP
Mercy Health Glass City Marathon
Ohio
Event weekend
- Map
- Profile
- Character
GPS trace: 372 pts / glasscitymarathon.org
- City
- Parkland
- Riverside
- Road
- Ascent
- 92 m
- m/km
- 4.4 m/km
86.4%Flat grade share
14 AUGMAP
Paavo Nurmi Marathon
Finland
Event weekend
- Map
- Profile
- Character
GPS trace: 451 pts / juoksuaika.fi
- City
- Coastal
- Historic
- Riverside
- Ascent
- 91 m
- m/km
- 4.3 m/km
85.7%Flat grade share
16 MAYMAP
Chester Half Marathon
North West
Event weekend
- Map
- Profile
- Character
GPS trace: 454 pts / www.activeleisureevents.co.uk
- Flat
- City
- Historic
- Countryside
- Ascent
- 116 m
- m/km
- 5.5 m/km
85.6%Flat grade share
More flattest half marathon route maps
Direct links after the featured cards, limited to mapped half marathon race pages with a publishable flat grade share value.
- 49Goodyear Half Marathon & 10K (Akron)Flat grade share 85.6% | Akron, ohio | elevation profile
- 50Allianz Richmond MarathonFlat grade share 85.5% | Richmond, virginia | elevation profile
- 51Greifenseelauf UsterFlat grade share 85.4% | Uster, switzerland | elevation profile
- 52SwissCityMarathon – LucerneFlat grade share 84.4% | Lucerne, switzerland | elevation profile
- 53Toulouse Métropole Run ExperienceFlat grade share 83.8% | Toulouse, france | elevation profile
- 54Run LeicesterFlat grade share 83.0% | Leicester, east-midlands | elevation profile
- 55Reims Champagne RunFlat grade share 83.0% | Reims, france | elevation profile
- 56Wilmslow Half MarathonFlat grade share 82.3% | Wilmslow, north-west | elevation profile
- 57Helsinki City MarathonFlat grade share 82.3% | Helsinki, finland | elevation profile
- 58Amica Newport Marathon & Half MarathonFlat grade share 82.0% | Newport, rhode-island | elevation profile
- 59David Cliff Wokingham Half MarathonFlat grade share 81.8% | Wokingham, south-east | elevation profile
- 60City of Colleges Half MarathonFlat grade share 81.8% | Conway, arkansas | elevation profile
- 61DRC's The Half (Dallas Running Club)Flat grade share 81.7% | Dallas, texas | elevation profile
- 62Colchester Half MarathonFlat grade share 81.7% | Colchester, east-of-england | elevation profile
- 63Madison Marathon (Madison, Wisconsin)Flat grade share 81.6% | Madison, wisconsin | elevation profile
- 64YMCA Harrisburg Marathon, Half, and Relay Presented by Enders InsuranceFlat grade share 81.4% | Harrisburg, pennsylvania | elevation profile
- 65Regensburg MarathonFlat grade share 81.1% | Regensburg, germany | elevation profile
- 66Hyundai Meia Maratona Internacional do PortoFlat grade share 80.9% | Porto, portugal | elevation profile
- 67Wallis Sands Half MarathonFlat grade share 80.8% | Rye, new-hampshire | elevation profile
- 68Garmin New Forest MarathonFlat grade share 80.7% | Brockenhurst, south-east | elevation profile
- 69Regeneron Great Limerick RunFlat grade share 80.6% | Limerick, ireland | elevation profile
- 70Wisconsin Lakeside Half Marathon & 5K (Monona)Flat grade share 79.5% | Monona, wisconsin | elevation profile
- 71GöteborgsvarvetFlat grade share 79.5% | Gothenburg, sweden | elevation profile
- 72Trondheim MaratonFlat grade share 78.7% | Trondheim, norway | elevation profile
- 73Generali Genève MarathonFlat grade share 78.7% | Geneva, switzerland | elevation profile
- 74Rimi Riga MarathonFlat grade share 78.5% | Riga, latvia | elevation profile
- 75Sioux Falls Skedaddle Half MarathonFlat grade share 77.9% | Sioux Falls, south-dakota | elevation profile
- 76OhioHealth Capital City Half & Quarter Marathon (Columbus)Flat grade share 77.7% | Columbus, ohio | elevation profile
- 77Endurancelife Suffolk (Dunwich)Flat grade share 77.7% | Dunwich, east-of-england | elevation profile
- 78Zurich Rock 'n' Roll Running Series MadridFlat grade share 77.3% | Madrid, spain | elevation profile
- 79Maine Marathon (Portland)Flat grade share 77.3% | Portland, maine | elevation profile
- 80Bozeman Half Marathon & 10KFlat grade share 77.1% | Bozeman, montana | elevation profile
- 81Michelob Ultra El Paso MarathonFlat grade share 76.9% | El Paso, texas | elevation profile
- 82Marathon des Alpes-Maritimes Nice-CannesFlat grade share 76.7% | Nice to Cannes, Alpes-Maritimes, france | elevation profile
- 83Southampton MarathonFlat grade share 76.6% | Southampton, south-east | elevation profile
- 84Midnattssolmaraton (Midnight Sun Marathon), TromsøFlat grade share 76.3% | Tromsø, norway | elevation profile
- 85Courses de Strasbourg EurométropoleFlat grade share 76.1% | Strasbourg, france | elevation profile
- 86Weymouth Half MarathonFlat grade share 75.6% | Weymouth, south-west | elevation profile
- 87The Original Las Vegas MarathonFlat grade share 75.4% | Henderson, nevada | elevation profile
- 88Omaha MarathonFlat grade share 75.3% | Omaha, nebraska | elevation profile
- 89Cajun Country RunFlat grade share 75.3% | Lafayette, louisiana | elevation profile
- 90Windermere Marathon (Spokane)Flat grade share 74.6% | Spokane, washington | elevation profile
- 91Marshall University MarathonFlat grade share 73.8% | Huntington, west-virginia | elevation profile
- 92PeaceHealth Appletree MarathonFlat grade share 73.5% | Vancouver, washington | elevation profile
- 93Montpellier Run FestivalFlat grade share 72.8% | Montpellier, france | elevation profile
- 94Sioux Falls MarathonFlat grade share 72.6% | Sioux Falls, south-dakota | elevation profile
- 95Büchl Éjszakai Félmaraton (Győr)Flat grade share 72.6% | Győr, hungary | elevation profile
- 96DNB Oslo MarathonFlat grade share 72.1% | Oslo, norway | elevation profile
- 97Albany COMBOS Marathon & Half MarathonFlat grade share 72.0% | Albany, georgia | elevation profile
- 98Hoag OC Marathon Running FestivalFlat grade share 71.8% | Costa Mesa, california | elevation profile
- 99RAD Half Marathon & 10K (Asheville)Flat grade share 71.7% | Asheville, north-carolina | elevation profile
- 100Lake Monona 20K & 5K (Monona)Flat grade share 71.5% | Monona, wisconsin | elevation profile
- 101FirstEnergy Akron MarathonFlat grade share 71.0% | Akron, ohio | elevation profile
- 1023-Sjøersløpet (Stavanger)Flat grade share 70.9% | Stavanger, norway | elevation profile
- 103TUI Μαραθώνιος Ρόδου (TUI Rhodes Marathon)Flat grade share 70.2% | Rhodes, greece | elevation profile
- 104HooDoo Half Marathon (Fairbanks)Flat grade share 69.8% | Fairbanks, alaska | elevation profile
- 105Thames Meander Marathon (London)Flat grade share 69.4% | Barnes, london | elevation profile
- 106Montana Marathon (Billings)Flat grade share 68.5% | Billings, montana | elevation profile
- 107Phoenix 10k & Half MarathonFlat grade share 67.9% | Phoenix, arizona | elevation profile
- 108Rochester Regional Health Flower City Half MarathonFlat grade share 67.3% | Rochester, new-york | elevation profile
- 109Bay of Fundy International MarathonFlat grade share 67.2% | Lubec, maine | elevation profile
- 110Lift Bridge Road RacesFlat grade share 67.1% | Stillwater, minnesota | elevation profile
- 111Milton Keynes MarathonFlat grade share 67.0% | Milton Keynes, Buckinghamshire, south-east | elevation profile
- 112St. Croix Crossing Half MarathonFlat grade share 66.7% | Stillwater, minnesota | elevation profile
- 113Fayetteville Half MarathonFlat grade share 65.8% | Fayetteville, arkansas | elevation profile
- 114Maui Oceanfront MarathonFlat grade share 65.7% | Kihei, hawaii | elevation profile
- 115Mississippi Blues MarathonFlat grade share 65.3% | Jackson, mississippi | elevation profile
- 116The Kauai Marathon & Half MarathonFlat grade share 65.2% | Koloa, hawaii | elevation profile
- 117Arctic Marathon (Rovaniemi)Flat grade share 65.0% | Rovaniemi, finland | elevation profile
- 1186 sjöar (Uppsala)Flat grade share 64.9% | Fjällnora, Uppsala, sweden | elevation profile
- 119The Race Half Marathon & 5K (Atlanta)Flat grade share 64.9% | East Point, georgia | elevation profile
- 120Ice Age Trail 50Flat grade share 64.3% | Whitewater, wisconsin | elevation profile
- 121Helvetia Half MarathonFlat grade share 63.6% | Hillsboro, oregon | elevation profile
- 122Sparkassen-Phoenix-Halbmarathon DortmundFlat grade share 63.6% | Dortmund, germany | elevation profile
- 123Naptown Half Marathon & 10K/5KFlat grade share 63.1% | Annapolis, maryland | elevation profile
- 124Cedar Rapids MarathonFlat grade share 62.0% | Cedar Rapids, iowa | elevation profile
- 125Connemara International Marathon (Connemarathon)Flat grade share 60.9% | Connemara, County Galway, ireland | elevation profile
- 126Greene & Schultz Hoosier Half Marathon, 5 & 10KFlat grade share 60.7% | Bloomington, indiana | elevation profile
- 127Tobacco Road Marathon and Half MarathonFlat grade share 60.0% | Cary, north-carolina | elevation profile
- 128Bend Marathon and HalfFlat grade share 59.4% | Bend, oregon | elevation profile
- 129Richmond Park Marathon (London)Flat grade share 59.3% | London, london | elevation profile
- 130Middlebury Maple RunFlat grade share 59.2% | Middlebury, vermont | elevation profile
- 131Queen Bee Half Marathon (Cincinnati)Flat grade share 58.7% | Cincinnati, ohio | elevation profile
- 132Cambridge Half Marathon + 5K at CambridgeSide (Cambridge, MA)Flat grade share 58.3% | Cambridge, massachusetts | elevation profile
- 133Mount Desert Island Marathon, Half & RelayFlat grade share 56.6% | Bar Harbor, maine | elevation profile
- 134Run the Rainbow for Children'sFlat grade share 56.3% | Jackson, mississippi | elevation profile
- 135Stavanger MarathonFlat grade share 55.6% | Stavanger, norway | elevation profile
- 136Run Madtown Half Marathon, 10K & 5KFlat grade share 55.4% | Madison, wisconsin | elevation profile
- 137Clonakilty Waterfront MarathonFlat grade share 55.3% | Clonakilty, ireland | elevation profile
- 138Boston's Run to RememberFlat grade share 55.1% | Boston, massachusetts | elevation profile
- 139St Albans Half MarathonFlat grade share 55.0% | St Albans, east-of-england | elevation profile
- 140The Nebraska Half (Omaha)Flat grade share 54.8% | Omaha, nebraska | elevation profile
- 141Midwest Financial Group Madison Mini MarathonFlat grade share 54.3% | Madison, wisconsin | elevation profile
- 142Estes Park Marathon and Half MarathonFlat grade share 54.1% | Estes Park, colorado | elevation profile
- 143The Skippo Trail RaceFlat grade share 53.7% | Ballwin, missouri | elevation profile
- 144Run WoodstockFlat grade share 52.5% | Pinckney, michigan | elevation profile
How flattest half marathon route maps qualify
A race appears in a route-map collection only when raceindex.org has stored route geometry. Elevation, ascent and GAP values appear only when the route has enough elevation-bearing evidence for a publishable profile; unsupported signals are omitted.
Flattest half marathon route map questions
What qualifies for flattest half marathon route maps?
A half marathon race must have stored route geometry and a publishable flat grade share value to appear in this ranking.
Why are some mapped half marathon races missing from this ranking?
Mapped races can be missing an elevation-derived metric when their stored route lacks enough elevation-bearing evidence. Unsupported route metrics are omitted rather than inferred.
Which half marathon race leads this mapped-route ranking?
Summer Breeze Half Marathon (San Leandro) leads this route-map ranking with flat grade share 100.0%.