Race Categories
Event Detail
Geosocial MJU Half Marathon 2026 is scheduled for Saturday, 21 November at Mae Ngat Somboon Chon Dam in Mae Taeng district, Chiang Mai province. The event offers a 21 km half marathon, 11 km mini-marathon and 5 km fun run amid the reservoir landscape outside Chiang Mai city. The Maejo Sustainable Geosocial Development Club presents the event as a charity walk-and-run promoting public health and sustainable development, as confirmed during the Chiang Mai provincial press briefing on 20 October 2026.
Venue, course and event morning
The dam lies beside Mae Ngat reservoir on the edge of Si Lanna National Park. It is a destination event rather than a Chiang Mai city-centre road race. The provincial government's official announcement confirms that the event programme begins at 04:30; that is not a separately confirmed flag-off time for each distance. An exact 2026 course map, elevation profile and surveyed starting position have not yet been independently confirmed. Do not assume the routes follow the full dam wall or any particular park trail.
Entries and awards
The 20 October Chiang Mai provincial announcement confirms online registration through 31 October 2026 but does not state a closing hour. Registration may finish sooner if places fill, so check directly with the organiser before paying. Current public entry information lists fees of THB 300 for 5K, THB 500 for 11K and THB 700 for 21K. The overall winners of the 11K and 21K will receive royal award trophies. Other age divisions, precise start times, cut-offs, timing arrangements, race-pack collection, route support and participant entitlements remain unconfirmed in the accessible current-edition announcements.
Travel and official information
Allow ample time to reach the Mae Taeng reservoir from Chiang Mai and confirm the assembly point and parking arrangements with the organiser. The map pin identifies the dam vicinity, not a verified 2026 starting gantry. Follow the organiser's Facebook page via the RUNLAH event listing for entry enquiries, race-pack announcements and any route or schedule changes.
Primary current-edition source: Chiang Mai Provincial Public Relations Office, announcement dated 20 October 2026.
Prizes
Overall champions in the 11K mini marathon and 21K half marathon each receive a royal trophy as announced by the Chiang Mai Provincial Public Relations Office on 20 October 2026. Other awards and age-group prizes remain unconfirmed.