100K road ultramarathons in Asia

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

100km route through the San'in Kaigan UNESCO Global Geopark, featuring coastal cliffs, historic fishing villages, and varied terrain in northern Kyoto

Historic riverside route from Tamluk to Haldia, with river views, humid monsoon atmosphere, and 50 km, 75 km, and 100 km ultra distances.

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

Demanding course across the UNESCO-recognized Akiyoshidai Geopark, with karst plateau, limestone scenery, green ponds and mining heritage

Road ultra and mountain trail running in one event, with 200km, 100km and 50km road races plus rugged 80km and 60km trail courses.

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

100 kilometers across Okinawa island landscapes with coastal scenery and varied terrain

Trails through Vietnam’s oldest national park, across karst landscapes, limestone forest and wildlife-rich valleys.

Evergreen forest trails along the UNESCO World Natural Heritage site with possible sightings of Yakushima deer and Yakushima macaque

Out-and-back from Gombak through dense forest and steep Genting Highlands climbs, with mixed road and trail surfaces.