39km high-altitude loop at Thailand's rooftop national park
A 39-kilometer loop at Doi Inthanon National Park — Thailand's rooftop — starting and finishing at the national park headquarters. The route climbs past the Doi Hua Suea and Doi Pha Tang peaks through cloud forest and highland terrain. 2,200 meters of climbing within a 10-hour cutoff.
Some ultra experience recommended
Chiang Mai, ThailandNovember 29, 2026
Inthanon 50 is a loop trail race in Chiang Mai, Thailand, held on November 29, 2026. The course covers 38.6 km, climbs 2,178 m, and has a 10h cutoff.
| Location | km | Elevation | Cutoff | Crew | Drop bags |
|---|---|---|---|---|---|
STRAT1 Doi Inthanon National Park Headquarters Start | 0.0 | 1,250 m | — | ||
B1 Pha Mon Mai Village Aid Station | 10.0 | 1,180 m | — | Crew | |
B2 Mae Klang Luang Village Aid Station | 16.0 | 1,090 m | 3h30m10:30 AM | ||
B3 Pha Tang Junction Aid Station | 27.0 | 1,580 m | — | ||
B4 Pha Tang Forest Ranger Unit Aid Station | 36.0 | 1,510 m | 9h15m4:15 PM | Crew | |
FINISH1 Doi Inthanon National Park Headquarters Finish | 39.0 | 1,250 m | 10h5:00 PM | Drop Bags |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
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