The Wangchan Valley race marks the triumphant return of one of Thailand’s most beloved trail running series after an eight-year hiatus. As part of the Trail Masters Series, which has been captivating runners since 2010, this final leg offers a spectacular blend of natural beauty and challenging terrain in eastern Thailand. Situated within Wangchan Valley, the race course winds through dense forests and remote trails, providing participants with breathtaking views and an immersive experience. The route features diverse landscapes, from runnable sections to steep climbs that test endurance and technical skills alike. This event caters to runners at all levels, ensuring there is something for everyone—whether you are a newcomer looking to dip your toes into the world of trail running or an experienced athlete seeking a rigorous challenge. Participants who complete this race will earn a coveted finisher medal, which complements medals from previous Trail Masters Series events. This unique collectible not only celebrates individual achievements but also symbolizes the completion of a special journey through Thailand’s most iconic trails. The atmosphere at Wangchan Valley is electric with anticipation and camaraderie among runners eager to reconnect with this beloved series. With its stunning scenery, challenging course, and memorable finisher medals, the race promises an unforgettable experience for all who take part in it. Join us as we celebrate the return of a trail running tradition that has inspired countless athletes over the years.
Races Offered
11k trail
Oct 25, 2026
straighten
Distance —
11.2K
terrain
Type —
Running
timer
21 days remaining
sell
$49.02
27k trail
Oct 25, 2026
straighten
Distance —
27.1K
terrain
Type —
Running
timer
21 days remaining
sell
$64.99
42k trail
Oct 25, 2026
straighten
Distance —
41.4K
terrain
Type —
Running
timer
21 days remaining
sell
$77.53
Trail Fun Run
Oct 25, 2026
straighten
Distance —
6.9K
terrain
Type —
Running
timer
21 days remaining
sell
$25.08
Weather History
These values represent the 3-year monthly averages for October in Rayong.
thermostatTemperature
23.8° / 30.4°
wb_sunnyFeels like
27.7° / 35.1°
light_mode
Avg sunshine hours
8h 44m
water_drop
Avg rainfall
8.9 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
6.5 km/h (Light breeze)
opacity
Sweat loss rate
Very high
terrain
Course conditions
Hard and dry surface
sunny
Max UV Index
Moderate (5.6)
humidity_mid
Humidity
87.4%
wb_twilight
Sunrise
06:04
nightlight
Sunset
17:55
About Rayong
Learn more about the host city, Rayong.
Rayong (ระยอง) is a city on the Eastern Gulf Coast of Thailand. Modest beaches dotted around Rayong Province are tranquil paradises for sea lovers who seek hideaways near the capital. Mind the oil refinery.
