Flattest other route maps

Name: Flattest other route maps data
Creator: raceindex.org

Which mapped route leads?

Martian Invasion of Races currently leads this mapped-route ranking on flat grade share (96.8%).

60Qualifying routes60Elevation profiles100%Profile share96.8%Top metric

Ranked mapped pages

Featured other route maps

All other route maps →

11 APRMAP

Martian Invasion of Races

Michigan

Latest edition11 Apr 2026

Map
Profile
Character

GPS trace: 350 pts / www.martianraces.com

Riverside
Parkland
Countryside
City

Ascent: 65 m
m/km: 2.5 m/km

96.8%Flat grade share

17 MAYMAP

Regensburg Marathon

Germany

Latest edition17 May 2026

Map
Profile
Character

GPS trace: 420 pts / www.regensburg-marathon.de

City
Riverside
Historic
Waterfront

Ascent: 92 m
m/km: 2.9 m/km

94.2%Flat grade share

07 MARMAP

Termal Bologna Marathon

Italy

Next race7 Mar 2027

Map
Profile
Character

GPS trace: 1,169 pts / www.bolognamarathon.run

Waterfront
City
Historic
Parkland

Ascent: 142 m
m/km: 4.7 m/km

89.6%Flat grade share

13 JUNMAP

Red, White and Blue Half Marathon - Shreveport

Louisiana

Latest edition13 Jun 2026

Map
Profile
Character

GPS trace: 232 pts / runsignup.com

Parkland
Waterfront
City
Community

Ascent: 32 m
m/km: 5.0 m/km

88.8%Flat grade share

24 APRMAP

Crazylegs Classic 8K (Madison)

Wisconsin

Next race24 Apr 2027

Map
Profile
Character

GPS trace: 50 pts / www.crazylegsclassic.com

Coastal
Lakeside
City
Parkland

Ascent: 15 m
m/km: 4.8 m/km

87.9%Flat grade share

09 MAYMAP

Lundaloppet

Sweden

Latest edition9 May 2026

Map
Profile
Character

GPS trace: 190 pts / lundaloppet.se

City
Parkland
Historic
Countryside

Ascent: 16 m
m/km: 6.4 m/km

83.8%Flat grade share

13 MARMAP

The Pistol Ultra (Alcoa)

Tennessee

Next race13 Mar 2027

Map
Profile
Character

GPS trace: 1,444 pts / www.pistolultra.com

Waterfront
Lakeside
Forest
Riverside

Ascent: 173 m
m/km: 5.4 m/km

82.8%Flat grade share

06 SEPMAP

Tupelo Marathon

Mississippi

Next race6 Sep 2026

Map
Profile
Character

GPS trace: 433 pts / tupelorunningclub.org

Countryside
Coastal

Ascent: 135 m
m/km: 5.9 m/km

78.2%Flat grade share

OtherMAP

Courses de Strasbourg Eurométropole

France

Map
Profile
Character

GPS trace: 401 pts / www.coursesdestrasbourg.eu

City
Coastal
Riverside
Historic

Ascent: 232 m
m/km: 7.5 m/km

75.1%Flat grade share

06 JUNMAP

Büchl Éjszakai Félmaraton (Győr)

Hungary

Latest edition6 Jun 2026

Map
Profile
Character

GPS trace: 892 pts / gyorisport.hu

City
Riverside
Historic
Road

Ascent: 96 m
m/km: 6.8 m/km

72.5%Flat grade share

11 OCTMAP

SPARKASSE 3-Länder-Marathon (Bregenz)

Austria

Next race11 Oct 2026

Map
Profile
Character

GPS trace: 324 pts / www.sparkasse-3-laender-marathon.at

Coastal
Mountain
Forest
Lakeside

Ascent: 88 m
m/km: 8.1 m/km

68.1%Flat grade share

18 APRMAP

Spokane River Run

Washington

Next race18 Apr 2027

Map
Profile
Character

GPS trace: 570 pts / runsignup.com

Hilly
Parkland
Riverside
City

Ascent: 326 m
m/km: 13.1 m/km

63.0%Flat grade share

05 OCTMAP

Annapolis Striders Metric Marathon (Harwood)

Maryland

Latest edition5 Oct 2025

Map
Profile
Character

GPS trace: 384 pts / www.annapolisstriders.org

Rolling
Countryside
Forest
Road

Ascent: 245 m
m/km: 9.4 m/km

61.9%Flat grade share

05 JULMAP

Bewl 15 (Wadhurst)

South East

Latest edition5 Jul 2026

Map
Profile
Cost
Character

GPS trace: 497 pts / www.wadhurstrunners.com

Rolling
Lakeside
Countryside
Parkland

Ascent: 273 m
m/km: 11.3 m/km

61.6%Flat grade share£40Entry

15 AUGMAP

6 sjöar (Uppsala)

Sweden

Next race15 Aug 2026

Map
Profile
Character

GPS trace: 1,478 pts / www.6sjoar.se

Countryside
Coastal
Lakeside
Forest

Ascent: 65 m
m/km: 11.8 m/km

59.1%Flat grade share

05 DECMAP

Course de l'Escalade (Genève)

Switzerland

Next race5 Dec 2026

Map
Profile
Character

GPS trace: 1,060 pts / escalade.ch

Rolling
Historic
City
Desert

Ascent: 91 m
m/km: 12.4 m/km

58.5%Flat grade share

31 OCTMAP

The Skippo Trail Race

Missouri

Next race31 Oct 2026

Map
Profile
Character

GPS trace: 998 pts / bigrivertrailseries.com

Parkland
Forest
Historic
Riverside

Ascent: 454 m
m/km: 15.1 m/km

54.8%Flat grade share

25 SEPMAP

TCS Lidingöloppet

Sweden

Next race25 Sep 2026

Map
Profile
Character

GPS trace: 791 pts / www.lidingoloppet.se

Hilly
Forest
Countryside
Coastal

Ascent: 372 m
m/km: 12.4 m/km

50.6%Flat grade share

03 APRMAP

Behind the Rocks Ultra

Utah

Next race3 Apr 2027

Map
Profile
Character

GPS trace: 529 pts / www.madmooseevents.com

Countryside
Desert
Canyon
Mountain

Ascent: 457 m
m/km: 15.2 m/km

43.3%Flat grade share

04 JULMAP

Bill Powers Memorial Firecracker 4-Miler (Brattleboro)

Vermont

Latest edition4 Jul 2026

Map
Profile
Character

GPS trace: 197 pts / runsignup.com

Parkland
City
Road
Community

Ascent: 91 m
m/km: 14.2 m/km

41.0%Flat grade share

28 MAYMAP

NUTS Karhunkierros

Finland

Next race28 May 2027

Map
Profile
Character

GPS trace: 1,159 pts / nutskarhunkierros.fi

Mountain
Forest
Riverside
Canyon

Ascent: 697 m
m/km: 19.6 m/km

38.2%Flat grade share

30 MAYMAP

The Maverick Peak District Trail (Bakewell)

East Midlands

Latest edition30 May 2026

Map
Profile
Cost
Character

GPS trace: 625 pts / www.maverick-race.com

Countryside
Mountain
Parkland
Moorland

Ascent: 589 m
m/km: 21.0 m/km

36.5%Flat grade share£25Entry

12 JUNMAP

Otter Creek Trail Run (Mandan)

North Dakota

Latest edition12 Jun 2026

Map
Profile
Character

GPS trace: 410 pts / runsignup.com

Countryside
Mountain
Lakeside
Waterfront

Ascent: 91 m
m/km: 15.7 m/km

36.2%Flat grade share

21 MARMAP

Telekom Vivicittá (Budapest)

Hungary

Latest edition21 Mar 2026

Map
Profile
Character

GPS trace: 165 pts / www.telekomvivicitta.hu

City
Waterfront
Riverside
Historic

Ascent: 136 m
m/km: 19.4 m/km

31.2%Flat grade share

20 JULMAP

Etape Bornholm

Denmark

Latest edition20 Jul 2026

Map
Profile
Character

GPS trace: 429 pts / etape-bornholm.dk

Desert
Coastal
Forest
Island

Ascent: 222 m
m/km: 25.8 m/km

30.6%Flat grade share

28 MAYMAP

The Arctic Triple // Lofoten Ultra-Trail

Norway

Latest edition28 May 2026

Map
Profile
Character

GPS trace: 739 pts / thearctictriple.no

Coastal
Mountain
Waterfront
Island

Ascent: 1,305 m
m/km: 54.4 m/km

28.7%Flat grade share

11 APRMAP

Ethias 15 km de Liège Métropole

Belgium

Next race11 Apr 2027

Map
Profile
Character

GPS trace: 820 pts / www.zatopekmagazine.com

Riverside
City
Historic
Parkland

Ascent: 759 m
m/km: 31.6 m/km

27.6%Flat grade share

14 MAYMAP

Volvic Volcanic Experience (VVX)

France

Latest edition14 May 2026

Map
Profile
Character

GPS trace: 818 pts / www.volvic-vvx.com

Historic
Parkland
Mountain
Forest

Ascent: 644 m
m/km: 26.8 m/km

27.5%Flat grade share

24 OCTMAP

Endurancelife Coastal Trail Series - North York Moors (Ravenscar)

Yorkshire

Next race24 Oct 2026

Map
Profile
Cost
Character

GPS trace: 687 pts / www.endurancelife.com

Coastal
Historic
Parkland
Countryside

Ascent: 598 m
m/km: 24.8 m/km

27.0%Flat grade share£47Entry

27 JUNMAP

Round Sheffield Run

Yorkshire

Latest edition27 Jun 2026

Map
Profile
Cost
Character

GPS trace: 643 pts / www.roundsheffieldrun.com

Hilly
Parkland
City
Countryside

Ascent: 574 m
m/km: 23.4 m/km

26.3%Flat grade share£39Entry

06 JUNMAP

Plitvički maraton (Plitvice Marathon)

Croatia

Latest edition6 Jun 2026

Map
Profile
Character

GPS trace: 285 pts / np-plitvicka-jezera.hr

Countryside
Lakeside
Historic
Parkland

Ascent: 157 m
m/km: 17.4 m/km

25.7%Flat grade share

19 SEPMAP

Wolf Creek Wrangle Trail Run

Wyoming

Next race19 Sep 2026

Map
Profile
Character

GPS trace: 295 pts / www.runwolfcreekwrangle.com

Countryside
Mountain
Historic
Waterfront

Ascent: 485 m
m/km: 43.1 m/km

24.4%Flat grade share

26 JUNMAP

Soča Outdoor Festival

Slovenia

Latest edition26 Jun 2026

Map
Profile
Character

GPS trace: 975 pts / soca-outdoor.com

Mountain
Parkland
Riverside
Historic

Ascent: 1,511 m
m/km: 44.3 m/km

23.7%Flat grade share

15 MAYMAP

Salomon Ultra-Trail Hungary

Hungary

Next race15 May 2027

Map
Profile
Character

GPS trace: 731 pts / ultratrail.hu

Waterfront
Countryside
Riverside
Mountain

Ascent: 1,057 m
m/km: 35.5 m/km

23.1%Flat grade share

09 OCTMAP

Douro Ultra Trail (Peso da Régua)

Portugal

Next race9 Oct 2026

Map
Profile
Character

GPS trace: 1,103 pts / stopandgo.net

Mountainous
Vineyard
Countryside
Waterfront

Ascent: 1,010 m
m/km: 36.1 m/km

22.7%Flat grade share

09 OCTMAP

Dalmacija Ultra Trail

Croatia

Next race9 Oct 2026

Map
Profile
Character

GPS trace: 973 pts / dalmacijaultratrail.com

Coastal
Riverside
City
Mountain

Ascent: 1,141 m
m/km: 39.2 m/km

21.1%Flat grade share

15 MAYMAP

Ultra Trail Učka

Croatia

Next race15 May 2027

Map
Profile
Character

GPS trace: 438 pts / rika.hr

Coastal
Parkland
Mountain
Island

Ascent: 609 m
m/km: 46.8 m/km

20.7%Flat grade share

04 APRMAP

Escape from Prison Hill (Carson City)

Nevada

Latest edition4 Apr 2026

Map
Profile
Character

GPS trace: 343 pts / www.tahoemtnmilers.org

Countryside
Mountain
Riverside
City

Ascent: 407 m
m/km: 37.0 m/km

20.6%Flat grade share

04 APRMAP

Sleeping Giant Trail Runs

Connecticut

Next race4 Apr 2027

Map
Profile
Character

GPS trace: 972 pts / steependurance.com

Parkland
Waterfront
Forest
Mountain

Ascent: 1,025 m
m/km: 41.0 m/km

20.4%Flat grade share

08 APRMAP

Tenerife Bluetrail by UTMB

Spain

Next race8 Apr 2027

Map
Profile
Character

GPS trace: 840 pts / tenerife.utmb.world

Coastal
Mountain
Island
Forest

Ascent: 1,219 m
m/km: 50.8 m/km

19.2%Flat grade share

25 JULMAP

Kia Fjällmaraton (Fjällmaratonveckan), Årefjällen

Sweden

Latest edition25 Jul 2026

Map
Profile
Character

GPS trace: 822 pts / fjallmaraton.se

Mountain
Forest
Waterfront
Countryside

Ascent: 869 m
m/km: 32.2 m/km

19.2%Flat grade share

23 APRMAP

Ultra Trail Vipava Valley (UTVV), Ajdovščina

Slovenia

Next race23 Apr 2027

Map
Profile
Character

GPS trace: 974 pts / ultratrail.si

Countryside
Historic
Vineyard
Mountain

Ascent: 1,697 m
m/km: 56.6 m/km

19.0%Flat grade share

13 JUNMAP

Sinks Canyon Rough and Tumble Trail Races

Wyoming

Latest edition13 Jun 2026

Map
Profile
Character

GPS trace: 561 pts / www.landerrunning.org

Countryside
Mountain
Riverside
Canyon

Ascent: 6,243 m
m/km: 346.8 m/km

17.3%Flat grade share

05 MAYMAP

adidas Innsbruck Alpine Trailrun Festival

Austria

Next race5 May 2027

Map
Profile
Character

GPS trace: 1,045 pts / www.innsbruckalpine.at

Mountain
Forest
Countryside
City

Ascent: 2,101 m
m/km: 55.6 m/km

16.2%Flat grade share

29 AUGMAP

Slovenski gozdarski trail

Slovenia

Next race29 Aug 2026

Map
Profile
Character

GPS trace: 1,016 pts / gozdarski-trail.si

Mountainous
Countryside
Forest
Lakeside

Ascent: 1,336 m
m/km: 39.3 m/km

15.8%Flat grade share

25 JUNMAP

Marathon du Mont-Blanc, Chamonix

France

Latest edition25 Jun 2026

Map
Profile
Character

GPS trace: 777 pts / www.marathonmontblanc.fr

Waterfront
Mountain
Forest
Countryside

Ascent: 1,641 m
m/km: 71.3 m/km

15.0%Flat grade share

11 JULMAP

Sljemenski Maraton (Zagreb)

Croatia

Latest edition11 Jul 2026

Map
Profile
Character

GPS trace: 709 pts / sljeme.run

Mountain
Forest
Wilderness
Destination

Ascent: 749 m
m/km: 53.5 m/km

14.1%Flat grade share

02 APRMAP

Unicaja Ultra Sierra Nevada

Spain

Next race2 Apr 2027

Map
Profile
Character

GPS trace: 891 pts / ultrasierranevada.com

City
Historic
Mountain
Parkland

Ascent: 1,929 m
m/km: 77.2 m/km

13.8%Flat grade share

More flattest other route maps

Direct links after the featured cards, limited to mapped other race pages with a publishable flat grade share value.

49ROUT Classic 100 Miles (Rodopi Ultra Trail)Flat grade share 13.2% | Haidou (Dasiko Horio Erymanthos), Stavroupoli, Xanthi, Rodopi National Park, greece | elevation profile
50Garda Trentino TrailFlat grade share 12.8% | Arco, italy | elevation profile
51Var Verdon Trail CanyonFlat grade share 12.4% | Aiguines, france | elevation profile
52Stranda Fjord Trail RaceFlat grade share 12.4% | Stranda, norway | elevation profile
53Dolomiti Extreme TrailFlat grade share 11.5% | Forno di Zoldo, Val di Zoldo, italy | elevation profile
54Zagori Mountain Running (ZMR)Flat grade share 11.1% | Tsepelovo, Zagori, Ioannina, greece | elevation profile
55STE - Caravela Seguros Sintra Trail X'tremeFlat grade share 11.1% | Sintra, portugal | elevation profile
56Podbrdo Trail Running FestivalFlat grade share 10.1% | Podbrdo, slovenia | elevation profile
57The North Face Grossglockner Ultra-TrailFlat grade share 10.1% | Kaprun, austria | elevation profile
58Carson Canyons Super-K Trail RunsFlat grade share 8.5% | Carson City, nevada | elevation profile
59Chudy Wawrzyniec (Rajcza)Flat grade share 3.4% | Rajcza, poland | elevation profile
60Zegama-Aizkorri Mendi MaratoiaFlat grade share 1.7% | Zegama, spain | elevation profile

How flattest other 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 other route map questions

What qualifies for flattest other route maps?

A other race must have stored route geometry and a publishable flat grade share value to appear in this ranking.

Why are some mapped other 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 other race leads this mapped-route ranking?

Martian Invasion of Races leads this route-map ranking with flat grade share 96.8%.

Loading page

Which mapped route leads?

Featured other route maps

Martian Invasion of Races

Regensburg Marathon

Termal Bologna Marathon

Red, White and Blue Half Marathon - Shreveport

Crazylegs Classic 8K (Madison)

Lundaloppet

The Pistol Ultra (Alcoa)

Tupelo Marathon

Courses de Strasbourg Eurométropole

Büchl Éjszakai Félmaraton (Győr)

SPARKASSE 3-Länder-Marathon (Bregenz)

Spokane River Run

Annapolis Striders Metric Marathon (Harwood)

Bewl 15 (Wadhurst)

6 sjöar (Uppsala)

Course de l'Escalade (Genève)

The Skippo Trail Race

TCS Lidingöloppet

Behind the Rocks Ultra

Bill Powers Memorial Firecracker 4-Miler (Brattleboro)

NUTS Karhunkierros

The Maverick Peak District Trail (Bakewell)

Otter Creek Trail Run (Mandan)

Telekom Vivicittá (Budapest)

Etape Bornholm

The Arctic Triple // Lofoten Ultra-Trail

Ethias 15 km de Liège Métropole

Volvic Volcanic Experience (VVX)

Endurancelife Coastal Trail Series - North York Moors (Ravenscar)

Round Sheffield Run

Plitvički maraton (Plitvice Marathon)

Wolf Creek Wrangle Trail Run

Soča Outdoor Festival

Salomon Ultra-Trail Hungary

Douro Ultra Trail (Peso da Régua)

Dalmacija Ultra Trail

Ultra Trail Učka

Escape from Prison Hill (Carson City)

Sleeping Giant Trail Runs

Tenerife Bluetrail by UTMB

Kia Fjällmaraton (Fjällmaratonveckan), Årefjällen

Ultra Trail Vipava Valley (UTVV), Ajdovščina

Sinks Canyon Rough and Tumble Trail Races

adidas Innsbruck Alpine Trailrun Festival

Slovenski gozdarski trail

Marathon du Mont-Blanc, Chamonix

Sljemenski Maraton (Zagreb)

Unicaja Ultra Sierra Nevada

More flattest other route maps

How flattest other route maps qualify

Methodology

Data coverage

Flattest other route map questions

What qualifies for flattest other route maps?

Why are some mapped other races missing from this ranking?

Which other race leads this mapped-route ranking?

Which mapped route leads?

Featured other route maps

Martian Invasion of Races

Regensburg Marathon

Termal Bologna Marathon

Red, White and Blue Half Marathon - Shreveport

Crazylegs Classic 8K (Madison)

Lundaloppet

The Pistol Ultra (Alcoa)

Tupelo Marathon

Courses de Strasbourg Eurométropole

Büchl Éjszakai Félmaraton (Győr)

SPARKASSE 3-Länder-Marathon (Bregenz)

Spokane River Run

Annapolis Striders Metric Marathon (Harwood)

Bewl 15 (Wadhurst)

6 sjöar (Uppsala)

Course de l'Escalade (Genève)

The Skippo Trail Race

TCS Lidingöloppet

Behind the Rocks Ultra

Bill Powers Memorial Firecracker 4-Miler (Brattleboro)