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The ultramarathon in Ubon Ratchathani will take place on December 5–6, 2026, at Huai Muang Public Park in Ubon Ratchathani province. The program includes individual 50 km and 100 km distances, as well as a 100 km team relay. The 100 km race and the relay start on December 5 at 15:00; the 50 km distance starts at 20:00. The time limit is 18 hours for the longer distance and 10 hours for the 50 km race. At the time of preparing this page, registration on the organizer’s official website is listed as closed, so check current information there before your trip.
Distances and Route
The ultramarathon has two individual starts. Runners on the 100 km distance complete 44 laps of 2.3 km each; the start is on December 5 at 15:00, and the finish is listed for December 6 at 09:00. The time limit is 18 hours.
The 50 km distance consists of 22 laps of 2.3 km. The start is set for December 5 at 20:00, and the finish for December 6 at 06:00. The time limit for this race is 10 hours.
The 100 km relay involves mixed teams of four people. Each team must include at least one woman; each runner covers 11 laps. The race and the relay start on December 5 at 15:00.
The lap format gives the course a clear structure: each lap is 2.3 km, and the total number of laps depends on the chosen start. Check the route conditions and additional rules with the organizer before the event.
When and Where
The competition will take place on December 5 and 6, 2026, at Huai Muang Public Park, in the Nai Mueang subdistrict, Mueang district, Ubon Ratchathani province. The official event page is the organizer’s website.
The 100 km race and team relay begin on December 5 at 15:00. The 50 km start is set for the same day at 20:00. The listed finish times are 09:00 on December 6 for the 100 km distance and 06:00 for the 50 km distance. The schedule also gives time limits of 18 hours and 10 hours respectively.
Race bib pickup for participants in the 100 km individual race and the relay is scheduled for December 5 from 09:00 to 14:00. Information about bib pickup for the 50 km distance is not included in the available materials.
Participation Terms
The regular entry fee is 1,500 baht for 50 km and 1,900 baht for 100 km. However, the official page states that registration is closed. Check whether you can still take part and the current terms with the organizer.
Participants under 18 must be at the competition with a parent or accompanying person. The organizer recommends that people with chronic illnesses consult a doctor before the start.
Information about dress code, gear, transport routes, and access to the park is not included in the event materials. Before your trip, check the participation terms and organizational announcements on the official event page. For general travel planning around the country, see also the Thailand events and holidays calendar 2026.
Frequently Asked Questions ❓
When is the ultramarathon in Ubon Ratchathani?
The competition takes place December 5–6, 2026, at Huai Muang Public Park. The 100 km race and relay start on December 5 at 15:00, and the 50 km distance starts at 20:00.
How much does participation cost, and is registration open?
The regular fee is 1,500 baht for 50 km and 1,900 baht for 100 km. The organizer’s page states that registration is closed, so check with the organizer whether you can still take part.
What distances and formats are offered?
Individual races over 50 km and 100 km are offered, along with a 100 km team relay. The relay team has four people, including at least one woman; each participant completes 11 laps.
Conclusion
The ultramarathon in Ubon Ratchathani brings together individual 50 km and 100 km races and a team relay at Huai Muang Public Park. If you plan to take part, check with the organizer whether registration is open and whether the start conditions have changed.