Experience the ultimate test of endurance at the Chiang Khan Ultra 100, where challenging ultra-road courses meet cultural immersion in Loei province. Athletes can take on one of two demanding routes: the Mekhong River course, spanning 64.9 km with 321 meters of elevation gain, or the Chiang Khan course, covering 98.6 km and 651 meters of elevation gain. Both courses lead you along tranquil riverside roads and through authentic villages, with the scenic Mekhong River as your constant companion. The route is energized by enthusiastic local support, including cheering crowds and cultural performances. Generous cut-off times—14 hours for the 60 km and 20 hours for the 100 km—make this event accessible for both experienced ultrarunners and those ready to tackle their first ultra-distance challenge.