The Boss—Thailand's ultimate trail running challenge CM6 represents the pinnacle of Thai trail running: extreme distance, massive elevation gain, and uncompromising mountain terrain. This flagship ultra features five distinct sections from the Hmong village HQ, including the notorious Huay Kaew Waterfall loop where many dreams end near civilization's comfort. Technical descents, steep climbs to Doi Pui Summit, and remote village passages create an epic journey through Northern Thailand's most challenging terrain. Only for experienced ultra runners seeking maximum points with minimum frills.