About
Free 104km road ultra through Chiang Khong district along the Mekong River in Chiang Rai province, near the Laos border. A community-driven event limited to 400 runners, offering scenic riverside terrain in Thailands far north.
Organized byChiangKhong Ultra Marathon
Difficulty
Not part of any indexed race series.
Hard104 KE
KM-Effort = distance (km) +elevation gain (m)100
Based on the ITRA standard.
Time limit:Not specified
Run Conditions
Road
Weather in Dec
Temperature
17 – 25°C
Mild
Humidity
Very high
Rainfall
23 mm
Dry season
Sunshine
10.3h/day
~4 rainy days expected
Registration
Register
Not found
Deadline
Not specified
Entry fee
FREE
Travel & Logistics
VenueNot found — check the website for more details
Google MapsNot found — check the website for more details
Nearest airports
CEI - Mae Fah Luang-Chiang Rai International Airport43 km | ~43min driving time
CNX - Chiang Mai International Airport186 km | ~3h06 driving time
Race Day Info
GPX File
Not yet released, check again closer to race date
BiB Collection
Not available yet, check again closer to race date
Mandatory Gear
Not available — check the website for more details
Community
Reviews
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Sources: ultraholic-image, website · Enriched 2026-06-03