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Chiang Mai Thailand SUTHEP 20-DAY (Thailand) 2026

Sun, 6 Dec 2026 · Thailand · 26 km · D+ 1,100 m · 7h time limit

A loop on the slopes of Doi Suthep-Pui National Park, starting and finishing at Chiang Mai PAO Park, with the forest trail to Montha Than Waterfall as its highlight. This is the early-morning daytime edition on the event's final day.

The course

The course tops out at 1,179 m (low point 319 m). The main climb comes right from the start: 858 m around 0–12 km. About 40% of the distance is gentle (under 5% grade). In 2024, 96% of starters finished. The median finish was about 5 h.

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Overview

Date
Sun, 6 Dec 2026
Start
06:30
Location
Thailand
Distance
26 km
Elevation gain
1,100 m
Time limit
7h
ITRA
H
Official website
chiangmai.utmb.world/races/SUTHEP20-DAY

Elevation profile

0510152025250125012
Distance (km) across, elevation (m) up. The dotted lines and numbers are the aid stations in the table below. High point 1,179 m · low point 319 m

Aid stations and cutoffs

#DistanceAid stationSegmentCutoff
15 kmAid 1W4 Mae Chok Luang(水)5 km—
214.8 kmA16 Montha Than Waterfall9.8 kmDay 1 11:305h
F26 kmFinishChiang Mai PAO Park(FINISH)11.2 kmDay 1 13:307h

The small figure under each cutoff is the time from the start. Day 1 is the day of the start.

2024 results

1,511 starters, 1,447 finishers (95.8% finish rate). Finish times of those who finished:

Fastest
2h 11m
Top 10%
3h 36m
Top 25%
4h 14m
Median
4h 56m
Top 75%
5h 44m
Top 90%
6h 21m
Last finisher
6h 58m

"Top 25%" means one in four finishers had crossed the line by this time.

Years with a different course or different cutoffs are not directly comparable.

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Race information as of 2026-09-13

Compiled from each race's official information. Details can change, so always check the race's official website for the latest. Spotted a mistake? Please tell us through the contact form.
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