About
CHIANG DAO 100 Ultra Trail - 20K is a 20.4 km trail race with 940m elevation gain in Thailand. Terrain: mountain, forest. Near Doi Luang Chiang Dao National Park. Rated moderate difficulty. Located near Chiang Dao, Chiang Mai.
Organized byFive Sports Creator × Mae Khanin Club
Difficulty
|4
Moderate30 KE
KM-Effort = distance (km) +elevation gain (m)100
Based on the ITRA standard.
Elevation Density46 m/km · Moderate
Elevation Density =elevation gain (m)distance (km)
Time limit:6h
Run Conditions
MountainForest
Weather in Dec
Temperature
17 – 27°C
Warm
Humidity
Very high
Rainfall
26 mm
Dry season
Sunshine
10.5h/day
~6 rainy days expected
Registration
Deadline
Nov 19, 2026
Entry fee
Payday – 1,400 THB(~$43)until Mar 7, 2026
Early Bird – 1,600 THB(~$49)until Apr 8, 2026
Normal – 1,900 THB(~$58)until Nov 19, 2026
Travel & Logistics
VenueBan Mae Na School, Mae Na, Chiang Dao, Chiang Mai
Google MapsView on Maps
Nearest airports
CNX - Chiang Mai International Airport112 km | ~2h14 driving time
CEI - Mae Fah Luang-Chiang Rai International Airport216 km | ~4h19 driving time
Race Day Info
GPX File
Not yet released, check again closer to race date
BiB Collection
Thu 17 Dec 2026, 10:00–18:00 at Decathlon Chiang Mai; Sat 19 Dec 2026, 10:00–18:00 at Ban Mae Na School, Chiang Dao
Mandatory Gear
Not available — check the website for more details
Other Distances
Community
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More Trail Races in Thailand
Race data is actively being refined. If something looks off, .
Sources: manual, website · Enriched 2026-05-23