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🇹🇭Thailand·Chiang Mai·Chiang Dao

CORE X250 Ultra Trail - 50K

UltraRegistration OpenITRA
Wed, Dec 23, 2026Date
53.4 kmDistance
+2,704mElevation
Chiang Dao, Chiang Mai, ThailandLocation
80 KEKM-Effort
06:00Start Time

About

CORE X250 Ultra Trail - 50K is a 53.4 km ultra race with 2,704m elevation gain in Thailand. Terrain: mountain, forest. Near Doi Luang Chiang Dao National Park. Rated hard difficulty. Located near Chiang Dao, Chiang Mai.

Organized byCORE THAILAND

Difficulty

ITRA 3 points
Hard80 KE
KM-Effort = distance (km) +elevation gain (m)100

Based on the ITRA standard.

Elevation Density51 m/km · Hard
Elevation Density =elevation gain (m)distance (km)
Time limit:15h

Run Conditions

MountainForest
Weather in Dec

Temperature

17 – 27°C

Warm

Humidity

Very high

Rainfall

19 mm

Dry season

Sunshine

10.6h/day

~2 rainy days expected

Registration

Website
race.action.in.th/events/COREX250UltraTrail
Register
race.action.in.th/events/COREX250UltraTrail
Deadline
Not specified
Entry fee
Early Bird – 2,400 THB(~$73)until Apr 5, 2026
Regular – 2,900 THB(~$88)
Register Now

Travel & Logistics

VenueChiang Dao Scout Camp (ค่ายลูกเสือ อ.เชียงดาว)
Google MapsView on Maps
Nearest airports
CNX - Chiang Mai International Airport120 km | ~2h24 driving time
CEI - Mae Fah Luang-Chiang Rai International Airport215 km | ~4h18 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

Other Distances

CORE X250 Ultra Trail - 15K

16.3 km+485mDec 23
ITRA

CORE X250 Ultra Trail - 30K

34.5 km+1,846mDec 23
ITRA

CORE X250 Ultra Trail - 70K

70.5 km+4,112mDec 23
ITRA

CORE X250 Ultra Trail - 100K

106 km+5,905mDec 23
ITRA

CORE X250 Ultra Trail - 161K

174 km+9,269mDec 23

CORE X250 Ultra Trail - 250K

249 km+13,665mDec 23
ITRA

Community

Reviews

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Race data is actively being refined. If something looks off, .

Sources: website · Enriched 2026-05-29