The Thep Saded Trail Race is an elite trail running competition nestled within the breathtaking landscapes of Northern Thailand, offering runners a unique blend of adventure and challenge. Held annually in Chiang Mai, this race is renowned for its diverse range of distances—spanning from 100 kilometers to 15 kilometers—that cater to both seasoned ultrarunners and beginners alike. The event's most ambitious course, the TST 100K, invites a maximum of 200 participants to traverse an arduous route that spans 100.5 kilometers with over 7,085 meters in elevation gain and nearly as much loss. This grueling journey is part of both the UTMB Index and iTRA National League systems, earning runners significant points toward their global trail running achievements. For those looking for a more moderate challenge, the TST 50K offers an equally scenic but less intense route covering 56 kilometers with approximately 3,508 meters in elevation gain. This course also accommodates up to 200 competitors and provides runners with valuable iTRA points and UTMB Index recognition. The TST 30K is designed for those who prefer a shorter yet still challenging experience. Spanning 35.7 kilometers, this route features over 2,490 meters of elevation gain amidst stunning natural scenery. Like the other distances, it attracts up to 200 runners and contributes to their trail running credentials. For newcomers or casual enthusiasts, the TST 15K presents a picturesque introduction to trail racing with its manageable distance of 13.6 kilometers, including nearly 1 kilometer in elevation gain. This course is also limited to 200 participants, ensuring an intimate and supportive race environment. Each event promises not only physical challenges but also the opportunity for runners to immerse themselves in the serene beauty and cultural richness of Northern Thailand’s countryside. The Thep Saded Trail Race stands out as a must-attend event for trail running enthusiasts seeking both personal milestones and international recognition within the global trail running community.
Races Offered
100Km Trail run
Nov 01, 2026
straighten
Distance —
105.5K
terrain
Type —
Running
timer
118 days remaining
sell
$136.81
15K Trail run
Nov 01, 2026
straighten
Distance —
13.7K
terrain
Type —
Running
timer
118 days remaining
sell
$44.46
30K Trail run
Nov 01, 2026
straighten
Distance —
35.8K
terrain
Type —
Running
timer
118 days remaining
sell
$79.81
50K Trail run
Nov 01, 2026
straighten
Distance —
56.1K
terrain
Type —
Running
timer
118 days remaining
sell
$104.89
About Thep Sadet
Learn more about the host city, Thep Sadet.
Thep Sadet is a tambon (subdistrict) of Doi Saket District, in Chiang Mai Province, Thailand. In 2005 it had a population of 1,716 people. The tambon contains eight villages.
