About
CORE X250 Ultra Trail - 161K is a 174 km ultra race with 9,269m elevation gain in Thailand. Terrain: mountain, forest. Near Doi Luang Chiang Dao National Park. Rated herculean difficulty. Located near Chiang Dao, Chiang Mai.
Organized byCORE THAILAND
Difficulty
Not part of any indexed race series.
Herculean267 KE
KM-Effort = distance (km) +elevation gain (m)100
Based on the ITRA standard.
Elevation Density53 m/km · Hard
Elevation Density =elevation gain (m)distance (km)
Time limit:50h