26 JUNMAP
Soča Outdoor Festival
Slovenia
Event weekend
- Map
- Profile
- Character
GPS trace: 580 pts / soca-outdoor.com
- Gently Rolling
- Mountain
- Parkland
- Riverside
- Ascent
- 310 m
- m/km
- 26.5 m/km
34.2%Flat grade share
Mapped route ranking
Flattest 12k route maps
7 mapped 12k race pages ranked by flat grade share. Only races with stored route geometry and the required route metric qualify.
Which mapped route leads?
Soča Outdoor Festival currently leads this mapped-route ranking on flat grade share (34.2%).
7Qualifying routes7Elevation profiles100%Profile share34.2%Top metric
Ranked mapped pages
Featured 12k route maps
28 MAYMAP
The Arctic Triple // Lofoten Ultra-Trail
Norway
Event weekend
- Map
- Profile
- Character
GPS trace: 319 pts / thearctictriple.no
- Hilly
- Mountain
- Coastal
- Waterfront
- Ascent
- 464 m
- m/km
- 38.7 m/km
31.3%Flat grade share
25 JULMAP
Kia Fjällmaraton (Fjällmaratonveckan), Årefjällen
Sweden
Event weekend
- Map
- Profile
- Character
GPS trace: 604 pts / fjallmaraton.se
- Countryside
- Mountain
- Forest
- Lakeside
- Ascent
- 288 m
- m/km
- 24.0 m/km
29.8%Flat grade share
25 APRMAP
Endurancelife Pembrokeshire
Wales
Event weekend
- Map
- Profile
- Character
GPS trace: 376 pts / www.endurancelife.com
- Coastal
- Parkland
- Desert
- Island
- Ascent
- 353 m
- m/km
- 29.2 m/km
22.6%Flat grade share
12 JUNMAP
Dolomiti Extreme Trail
Italy
Event weekend
- Map
- Profile
- Character
GPS trace: 525 pts / www.dolomitiextremetrail.com
- Hilly
- Countryside
- Forest
- Historic
- Ascent
- 571 m
- m/km
- 47.6 m/km
15.1%Flat grade share
19 SEPMAP
Carson Canyons Super-K Trail Runs
Nevada
Event weekend
- Map
- Profile
- Character
GPS trace: 397 pts / ascentruns.com
- Hilly
- Canyon
- Countryside
- City
- Ascent
- 473 m
- m/km
- 39.4 m/km
8.9%Flat grade share
15 MAYMAP
Garda Trentino Trail
Italy
Event weekend
- Map
- Profile
- Character
GPS trace: 774 pts / www.gardatrentinotrail.it
- Historic
- Countryside
- Coastal
- Mountain
- Ascent
- 806 m
- m/km
- 67.2 m/km
8.6%Flat grade share
How flattest 12k 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 12k route map questions
What qualifies for flattest 12k route maps?
A 12k race must have stored route geometry and a publishable flat grade share value to appear in this ranking.
Why are some mapped 12k 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 12k race leads this mapped-route ranking?
Soča Outdoor Festival leads this route-map ranking with flat grade share 34.2%.