About
Samui Trail 55K is a 55.0 km ultra race with 3,176m elevation gain in Thailand. This is a night race, starting at 17:00. Rated hard difficulty. Located near Ko Samui, Surat Thani.
Organized byเข้ารกเข้าพงทีม
Difficulty
|50
Finisher Level240
Hard87 KE
KM-Effort = distance (km) +elevation gain (m)100
Based on the ITRA standard.
Elevation Density58 m/km · Hard
Elevation Density =elevation gain (m)distance (km)
Time limit:20h
Run Conditions
Weather in Nov
Temperature
22 – 27°C
Warm
Humidity
Extreme
Rainfall
285 mm
Monsoon
Sunshine
7.5h/day
~26 rainy days expected
Registration
Register
Deadline
Nov 7, 2026
Entry fee
Early Bird – 2,400 THB(~$73)until Jul 15, 2026
Travel & Logistics
VenueNot found — check the website for more details
Google MapsNot found — check the website for more details
Nearest airports
URT - Surat Thani Airport88 km | ~2h12 driving time
USM - Samui Airport227 km | ~5h10 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
Community
Reviews
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Race data is actively being refined. If something looks off, .
Sources: ultraholic-image, race.thai.run · Enriched 2026-07-08