About
CHIANG DAO 100 Ultra Trail - 100K is a 104 km ultra race with 5,046m elevation gain in Thailand. Terrain: mountain, forest. Near Doi Luang Chiang Dao National Park. Rated very hard difficulty. Located near Chiang Dao, Chiang Mai.
Organized byFive Sports Creator × Mae Khanin Club
Difficulty
|6
Very Hard154 KE
KM-Effort = distance (km) +elevation gain (m)100
Based on the ITRA standard.
Elevation Density49 m/km · Moderate
Elevation Density =elevation gain (m)distance (km)
Time limit:32h
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 – 3,700 THB(~$113)until Mar 7, 2026
Early Bird – 3,900 THB(~$119)until Apr 8, 2026
Normal – 4,200 THB(~$128)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; Fri 18 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
Reviews
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Race data is actively being refined. If something looks off, .
Sources: thairun, website · Enriched 2026-05-23