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
91.3%Max grade
Mapped route ranking
Steepest 12k route maps
7 mapped 12k race pages ranked by max grade. Only races with stored route geometry and the required route metric qualify.
Which mapped route leads?
The Arctic Triple // Lofoten Ultra-Trail currently leads this mapped-route ranking on max grade (91.3%).
7Qualifying routes7Elevation profiles100%Profile share91.3%Top metric
Ranked mapped pages
Featured 12k route maps
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
72.7%Max grade
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
48.6%Max grade
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
38.0%Max grade
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
28.9%Max grade
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
26.6%Max grade
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
18.9%Max grade
How steepest 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.
Steepest 12k route map questions
What qualifies for steepest 12k route maps?
A 12k race must have stored route geometry and a publishable max grade 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?
The Arctic Triple // Lofoten Ultra-Trail leads this route-map ranking with max grade 91.3%.