About
CM6 i6 is a 137 km ultra race with 7,670m elevation gain in Thailand. Terrain: mountain, forest. Near Doi Suthep-Pui National Park. Rated herculean difficulty. Located near Chiang Mai, Chiang Mai.
Organized byGoodie Box Co., Ltd.
Difficulty
Herculean214 KE
KM-Effort = distance (km) +elevation gain (m)100
Based on the ITRA standard.
Elevation Density56 m/km · Hard
Elevation Density =elevation gain (m)distance (km)
Time limit:38h
Run Conditions
MountainForest
Weather in Aug
Temperature
24 – 29°C
Warm
Humidity
Extreme
Rainfall
450 mm
Monsoon
Sunshine
7.4h/day
~30 rainy days expected
Registration
Website
Deadline
Registration may already be closed — check with organizers
Entry fee
Not found
Travel & Logistics
VenueChiang Mai International Exhibition and Convention Centre
Google MapsView on Maps
Nearest airports
CNX - Chiang Mai International Airport6 km | ~7min driving time
Race Day Info
GPX File
Not available — check the website for more details
BiB Collection
Not available — check the website for more details
Mandatory Gear
- Backpack/vest (fits all mandatory gear)
- Water containers (min 1.5L)
- Headlamp with batteries (set 1)
- Spare headlamp with batteries (set 2)
- Mobile phone
- Rain jacket
- First aid kit
- Whistle
- Emergency food
- Personal cup
- Emergency blanket
Other Distances
Community
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Sources: website · Enriched 2026-05-17