Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, kilometre by kilometre.
Race-day light
For a 24:40 finish (an estimate) · starting 10:00 4 Dec · headlamp km 55–138. Dark means the sun below civil twilight.
Climbs
25 climbs · 7,198 m totalbiggest firstAid stations as published on the course file
| Aid station | km | Mile |
|---|---|---|
| A A1 Khiri Kiang Dao Garden Home บ้านสวนคีรีเคียงดาว | 9.3 | 5.8 |
| A A2 Ban Mae Mae School โรงเรียนบ้านแม่แมะ | 22.3 | 13.9 |
| A A3 Pagia Highland Research Station สถานีวิจัยเกษตรที่สูงป่าเกี๊ยะ | 32.4 | 20.1 |
| A A4 Huay Kub Kab Village บ้านห้วยกุ๊บกั๊บ | 42.0 | 26.1 |
| A A5 Suanta Sobkai Homestay สวนต้า สบก๋าย โฮมสเตย์ | 50.3 | 31.3 |
| A A6 Doi Mon Ngo ดอยม่อนเงาะ | 63.6 | 39.5 |
| A A7 Mae Taeng Watershed Research Station สถานีวิจัยต้นน้ำแม่แตง | 70.5 | 43.8 |
| A A8 Pha Taek Village บ้านผาแตก | 81.4 | 50.6 |
| A A9 Wat Phraphutthabat Si Roi วัดพระพุทธบาทสี่รอย | 91.1 | 56.6 |
| A A10 Mae Ka Piang Village บ้านแม่ก๊ะเปียง | 98.8 | 61.4 |
| A A11 Wat Pang Hai วัดปางไฮ | 108.5 | 67.4 |
| A A12 Monjam ม่อนแจ่ม | 114.0 | 70.9 |
| A A13 Maesa Elephant Camp ปางช้างแม่สา | 128.1 | 79.6 |
| A A14 Chao Pho Luang Upatham 7 School โรงเรียนเจ้าพ่อหลวงอุปถัมภ์ 7 | 137.2 | 85.2 |
| A A15 Wat Doi Pui วัดดอยปุย | 146.9 | 91.3 |
| A A16 Montha Than Waterfall มณฑาธาร | 160.0 | 99.4 |
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Conditions typical race-day weather for 4 Dec at the start
Typical = the median of 2016–2025 for 4 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 Fri, Dec 4, 2026 · 10:00 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 CHIANG DAO 160 173K — 2026 covers 170.9 km (106.2 mi) with 9,530 m (31,265 ft) of elevation gain. That is about 56 m per km of climbing, and 9,641 m of descent. The course tops out at 1,730 m and bottoms out at 319 m. There are 16 aid stations on course; the longest stretch between aid is 14.1 km. The profile has 25 sustained climbs; the biggest is the climb to A3 Pagia Highland Research Station สถานีวิจัยเกษตรที่สูงป่าเกี๊ยะ, +900 m over 10.9 km at 8.2% on average (steepest stretch 37%). Race day is 4 December 2026, starting at 10:00; the sun rises at 06:44 and sets at 17:46. Typical race-day weather at the start: a high of 28°C and a low of 17°C, with a 14% 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
Races like this one close in distance, climbing, terrain, altitude, weather and season
- RMB Ultra-Trail Cape Town 100 Miler — 2026Nov · 161 km · 53 m/kmSame distance · Similar climbing
- Oman by UTMB HAJAR ULTRA 154K — 2026Dec · 151 km · 54 m/kmSame distance · Similar climbing · Same month
- Chiang Mai Thailand by UTMB ELEPHANT 100 100K — 2026Dec · 100 km · 54 m/kmSimilar weather · Similar climbing · Same month
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