About
Race through ancient sandstone ridges in Phu Lanka National Park, home to the famous Tham Naka and Tham Nakee caves — geological formations resembling dragon scales. Runners summit the Chedi Kong Khao Si Bun Nao, the park highest peak, and enter a restricted virgin forest area normally closed to visitors.
Organized byIsaan Ultra Trail / Bathavee Company
Difficulty
Moderate40 KE
KM-Effort = distance (km) +elevation gain (m)100
Based on the ITRA standard.
Elevation Density35 m/km · Moderate
Elevation Density =elevation gain (m)distance (km)
Time limit:9h
Run Conditions
MountainForest
Weather in Oct
Temperature
22 – 30°C
Warm
Humidity
Very high
Rainfall
125 mm
Moderate rain
Sunshine
9.6h/day
~13 rainy days expected
Registration
Deadline
Not specified
Entry fee
Not found
Travel & Logistics
VenueBan Don Bok School, Phu Lanka National Park
Google MapsNot found — check the website for more details
No airport within 200 km
Race Day Info
GPX File
Not yet released, check again closer to race date
BiB Collection
Not available — check the website for more details
Mandatory Gear
Not available — check the website for more details
Other Distances
Community
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Race data is actively being refined. If something looks off, .
Sources: manual, website · Enriched 2026-08-24