About

The Khaoyai 100K Ultra Marathon is a demanding trail challenge set in the striking landscapes of Pak Chong and Khao Yai, built for runners looking to test their endurance on varied and rugged terrain. The route mixes rural roads, forest paths, and rolling hills, with technical stretches and steady elevation changes that add to the difficulty while rewarding runners with a true sense of progression through the course. What sets the event apart is its vivid natural setting and the atmosphere around it. Runners move through lush scenery with chances to spot local wildlife, pass waterfalls, and take in sweeping viewpoints that showcase the character of the Khao Yai region. Backed by a strong local and international ultra-running community, the race has an inspiring, high-energy feel that makes it as memorable for its spirit as for its challenge.