Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, kilometre by kilometre.
Race-day light
For a 2:25 finish (an estimate) · starting 07:00 6 Dec. Dark means the sun below civil twilight.
Climbs
3 climbs · 569 m totalbiggest firstAid stations as published on the course file
| Aid station | km | Mile |
|---|---|---|
| A W3 Huay Tung Tao ห้วยตึงเฒ่า | 7.5 | 4.6 |
Badge colours match the markers on the map above — always confirm locations and cutoffs with the race organizer.
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Conditions typical race-day weather for 6 Dec at the start
Typical = the median of 2016–2025 for 6 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 Sun, Dec 6, 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 CHEDI 20 17K — 2026 covers 16.5 km (10.2 mi) with 676 m (2,216 ft) of elevation gain. That is about 41 m per km of climbing, and 678 m of descent. The course tops out at 609 m and bottoms out at 319 m. There is 1 aid station on course; the longest stretch between aid is 9.0 km. The profile has 3 sustained climbs; the biggest is the climb from km 5.4, +259 m over 3.1 km at 8.4% on average (steepest stretch 41%). Race day is 6 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 11% 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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