About
Phrae Ultra 100 - 40K is a 40.0 km full marathon category race with 1,109m elevation gain in Thailand. Rated challenging difficulty. Located near Phrae.
Difficulty
Not part of any indexed race series.
Challenging51 KE
KM-Effort = distance (km) +elevation gain (m)100
Based on the ITRA standard.
Elevation Density28 m/km · Moderate
Elevation Density =elevation gain (m)distance (km)
Time limit:10h