Race Introduction

Thailand by UTMB, the country’s most competitive event on the roof of Thailand!

2021 will be the second edition of Thailand by UTMB®, which after a hugely successful inaugural event, was welcomed into the Ultra-Trail® World Tour.

Based around the country’s highest mountain, Doi Inthanon, Thailand by UTMB® literally takes runners to the rooftop of Thailand.

The route showcases the local biodiversity and the forest changes with a gradual climb from 400 to 2100 meters above sea level. The journey immerses runners in local culture, allowing them to experience the peaceful ways of life of the Hmong, Pga-Gan-Yaw and Karenic tribes as well as awe-inspiring views of the terraced rice paddy fields and cool temperatures in beautiful, tropical, humid forests.

The start and finish line are at Doi Inthanon National Park HeadQuarters, Chom Thong District, Chiang Mai Province. Doi Inthanon is one of the most popular national parks in Thailand, famous for its waterfalls, trails, remote villages, exceptional sunsets and sunrise, birdwatching and all-year-round cold weather on higher elevations.

Thailand by UTMB® offers 5 races: 168km, 107km, 54km, 23 km and 12km. Runners will gain iTRA points and Running Stones, giving them more chances to earn a place on the start line at the UTMB® Mont-Blanc in France, the pinnacle event of the trail running year.


Catherine Poletti, Chairwoman of the Board - UTMB Group, welcome Thailand by UTMB® first edition, and greeting all participated runners.