Course map, elevation profile & surface
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Follow the route over 3D terrain, kilometre by kilometre.
Race-day light
For a 3:40 finish (an estimate) · starting 07:00 5 Dec. Dark means the sun below civil twilight.
Climbs
3 climbs · 989 m totalbiggest firstAid stations as published on the course file
| Aid station | km | Mile |
|---|---|---|
| A W4 Mae Chok Luang แม่จอกหลวง | 4.9 | 3.1 |
| A A16 Montha Than Waterfall มณฑาธาร | 14.4 | 9.0 |
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Conditions typical race-day weather for 5 Dec at the start
Typical = the median of 2016–2025 for 5 Dec ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.
Race almanac the sky on race day
Next race day Sat, Dec 5, 2026 · 7:00 AM start
First and last light are civil twilight, the sun 6° below the horizon. The moon is lit as at midnight after the start; headlamp hours count a typical finish from the start while the sun is below civil twilight. Worked out for the start line.
Reviews what runners who have been there say
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About this course
Chiang Mai Thailand by UTMB SUTHEP 20-NIGHT 26K — 2026 covers 25.3 km (15.7 mi) with 1,126 m (3,694 ft) of elevation gain. That is about 44 m per km of climbing, and 1,127 m of descent. The course tops out at 1,179 m and bottoms out at 319 m. There are 2 aid stations on course; the longest stretch between aid is 10.9 km. The profile has 3 sustained climbs; the biggest is the climb from km 0.1, +756 m over 10.1 km at 7.5% on average (steepest stretch 35%). Race day is 5 December 2026, starting at 07:00; the sun rises at 06:44 and sets at 17:47. Typical race-day weather at the start: a high of 28°C and a low of 19°C, with a 10% chance of a wet day. The interactive map above shows the full route with its elevation profile and aid stations, built from the course's GPS file.
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Course history
- Nov 1, 2026Added to the catalog
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