Thep Sadet Trail

THEP SADET TRAIL is a premier trail running event in Chiang Mai that takes athletes deep into one of Northern Thailand’s most scenic and untouched landscapes. With distances ranging from 100 km to 10 km, the event offers challenges for all levels—whether you're an experienced ultrarunner or new to the trails. As part of the UTMB Index and officially recognized in the iTRA National League, it’s a race that combines personal achievement with global trail running prestige. Distance Details + Runner Limit + iTRA/UTMB Index . ALL-NEW TST 100K • Runner Limit: 200 คน • Distance: 100.5 KM • Elevation Gain: 7,085 M • Elevation Loss: 6,848 M • iTRA Points: 5 • UTMB Index: 100M . TST 50K • Runner Limit: 200 คน • Distance: 56 KM • Elevation Gain: 3,508 M • Elevation Loss: 3,507 M • iTRA Points: 3 • UTMB Index: 50K . TST 30K • Runner Limit: 200 คน • Distance: 35.7 KM • Elevation Gain: 2,490 M • Elevation Loss: 2,486 M • iTRA Points: 2 • UTMB Index: 50K . TST 15K • Runner Limit: 200 คน • Distance: 13.6 KM • Elevation Gain: 951 M • Elevation Loss: 945 M