Event Detail
The eighth ChiangKhong Ultra Marathon 104K takes place on 5–6 December 2026 in Chiang Rai province, Thailand. The advertised point-to-point route starts at Chiangrai Contemporary Art Museum and heads towards Chiang Khong.
Race details
The organiser advertises 104 km. Check the final runner guide for the precise route, finish location, aid stations, start time, cut-offs and mandatory equipment. Start time remains TBA. The map’s finish reference identifies Chiang Khong town generally rather than a confirmed finish arch.
Registration
RUNLAH’s organiser-sourced listing, updated 27 October 2026, advertises the 104 km category as free and directs enquiries to the organiser. Confirm eligibility, available places and the entry procedure before travelling. Race-pack collection and the final registration deadline are not yet confirmed.
This is a long-distance endurance event. Arrange transport between the start and finish locations and follow the organiser’s latest safety and support instructions.