Cambodia trekking tours take you deep into jungles, mountains, and national parks, with options ranging from 1-day hikes around Siem Reap’s Kulen Mountain to 15-day expeditions through the Mekong River and hill tribe regions. The most popular trekking hubs are Siem Reap, Mondulkiri, Rattanakiri, and the Cardamom Mountains, offering both cultural immersion and wilderness adventure.