About
Trail On The Rock - 50K is a 50.0 km ultra race with 1,133m elevation gain in Thailand. Terrain: mountain, forest. Rated challenging difficulty. Located near Chaiyaphum, Chaiyaphum.
Organized byRUN HAPPY SERIES
Difficulty
Challenging61 KE
KM-Effort = distance (km) +elevation gain (m)100
Based on the ITRA standard.
Elevation Density23 m/km · Easy
Elevation Density =elevation gain (m)distance (km)
Time limit:12.5h
Run Conditions
MountainForest
Weather in Oct
Temperature
19 – 25°C
Mild
Humidity
Extreme
Rainfall
196 mm
Wet season
Sunshine
9.3h/day
~21 rainy days expected
Registration
Register
Deadline
Sep 25, 2026
Entry fee
Early Bird – 2,200 THB(~$67)until Aug 31, 2026
Regular – 2,800 THB(~$85)until Sep 25, 2026
Travel & Logistics
VenuePa Hin Ngam National Park (อุทยานแห่งชาติป่าหินงาม), Chaiyaphum
Google MapsView on Maps
No airport within 200 km
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: thairacerun, website · Enriched 2026-05-23