100K ultramarathons in Thailand

Steep climbs, dense tropical forests, and coastal views across Phuket’s island landscapes on the PKT55 Championship route

Mountain trails through northern Thailand, vibrant hill tribe culture, traditional attire, and daily village life

Scenic 100-kilometer route through Chiang Mai’s San Sai District, featuring Mae Kuang Udom Thara Dam, Huai Jo Reservoir, and Mae Jo Farm

Certified flat-loop course in Wachirabenjatat Park, featuring elite ultrarunners and national championships in a central Bangkok green space

Rugged mountain paths, lush forests, and river crossings with opportunities to engage with indigenous communities and camp under the stars

Rugged 100K trail route through Pak Chong and Khao Yai, with rural roads, forest paths, rolling hills, waterfalls, and sweeping viewpoints.

Secluded Pai mountains route with steep climbs, unpredictable terrain, dense jungles, exposed ridges, and extreme multi-day elevation gain options

20 km loop course with 152 meters elevation gain per lap, lush landscapes, and coastal scenery in southern Thailand’s tropical Phuket region

Lush green trails and diverse terrain under starry skies at Norn Nub Dao Camping in the tranquil Cha-Om District, sunset through dawn

Dense jungle, relentlessly steep climbs, and rugged terrain on one of Thailand’s toughest trail ultras, with a demanding 100K option.

Road course from Phu Phaya Po summit at 1,350 meters to the Tha Pla lowlands, featuring highland landscapes and significant cultural sites

Dense jungle paths, rocky ground and steep climbs through Mu Ko Chang National Park’s lush tropical island terrain.