About
Trail Master Series - 41K is a 41.4 km full marathon category race with 1,643m elevation gain in Thailand. Terrain: mountain, forest. Rated challenging difficulty. Located near Wangchan, Rayong.
Organized byTrail Masters Series
Difficulty
Challenging58 KE
KM-Effort = distance (km) +elevation gain (m)100
Based on the ITRA standard.
Elevation Density40 m/km · Moderate
Elevation Density =elevation gain (m)distance (km)
Time limit:12.5h
Run Conditions
MountainForest
Weather in Oct
Temperature
23 – 30°C
Warm
Humidity
Extreme
Rainfall
296 mm
Monsoon
Sunshine
8.2h/day
~24 rainy days expected
Registration
Website
Deadline
Not specified
Entry fee
Early Bird – 2,500 THB(~$76)
Normal – 3,200 THB(~$97)
Travel & Logistics
VenueWangchan Valley, Rayong
Google MapsNot found — check the website for more details
Nearest airports
UTP - U-Tapao-Rayong-Pattaya International Airport75 km | ~1h30 driving time
BKK - Suvarnabhumi Airport216 km | ~4h19 driving time
Race Day Info
GPX File
Not yet released, check again closer to race date
BiB Collection
1-4 Oct 2026, 11:00-20:30 at Supersport Central Chidlom 3rd Floor; Sat 24 Oct 2026, 10:00-18:00 at Wangchan Valley Rayong; Sun 25 Oct 2026 from 05:00 at race venue
Mandatory Gear
- Hydration vest, belt or water bottle
- Water (at least 1.0L)
- Race bib
- First aid kit
- Headlamp
Other Distances
Community
Reviews
No reviews yet. Be the first to share your experience!
Race data is actively being refined. If something looks off, .
Sources: website · Enriched 2026-06-02