Lace up for these marathons around Thailand in Q4 2025
Overview of some the remaining races that are runnning from October to December of this year
The Thaiger key takeaways
- Thailand’s Q4 marathon season is filled with events from October to December, including full marathons, half-marathons, trail races, and urban runs across the country.
- Many races pass through scenic and cultural routes, allowing runners to enjoy iconic landmarks, riversides, historic sites, and lush landscapes while staying active.
- Early registration and proper bib collection are essential to avoid disqualification and to ensure participants can fully enjoy each event.
As the final months of 2025 approach, Thailand is primed for a thrilling running season packed with marathons and trail challenges across the country. Whether you’re a seasoned marathoner, an expat seeking an active holiday, or simply curious about local events, Q4 in Thailand offers the perfect backdrop for fitness and exploration.
This is a comprehensive look at the upcoming marathons and major races scheduled for October, November, and December of this year. Many of these races will also require registration well in advance of their start dates. If anything interests you, please register ASAP. Don’t worry, though, the events will likely be held again next year.
Something to keep in mind: a full marathon officially consists of 42.195 kilometres, and a half-marathon officially consists of 21.098 kilometres. This is the standard but different events might have different proprietary distances as well.
Upcoming marathons around Thailand
| Month (Click to jump) | Summary |
|---|---|
| October | October kicks off with diverse runs, from Bangkok’s Silk Stride to scenic trail adventures in Mae Hong Son, Sukhothai, and Nakhon Phanom. |
| November | November hosts major events, including Bangsaen42, Bangkok Marathon, Korat Marathon, and the UTMB Chiang Mai ultra, blending urban and trail challenges. |
| December | December closes the year with festive races like the Chiang Mai International, Bangsaen21 Half Marathon, the Bangkok Midnight Marathon, and the scenic Photak Marathon in Nong Khai. |
October
October sets the tone for Q4 with a line-up of diverse events, including cultural runs, ultras, and trail adventures.
11 October – The Silk Stride Bangkok: This 61 km multi-day stage race in Bangkok is inspired by the city’s rich silk heritage. Runners traverse historic landmarks on a route that includes cultural checkpoints and even night segments. It’s a unique challenge for those looking to blend endurance with heritage.
12 October – Sukhothai Marathon: Step back in time at the Sukhothai Marathon, where the course winds through the ancient ruins of Sukhothai Historical Park. The race includes marathon, half-marathon, 10 km, and 5 km options. With flat terrain and misty morning air, this run is both scenic and spiritual.
19 October – Mae Moh Half Marathon (Lampang): Set in northern Thailand’s Mae Moh district. The course loops around a large reservoir surrounded by lush hills, offering 21.1 km, 10 km, and 5 km races. Runners are greeted by cheering local communities and pleasant rural views.
19 October – Garmin Thailand Half Marathon (Bangkok): Held at Hua Mak, this is the 5th edition of Garmin’s flagship race in Thailand. As part of the Garmin Run Asia Series 2025, the event offers a fast and flat 21.1 km course plus a 10 km race.
25 October – Tulay Trail (Mae Hong Son): Set in the remote beauty of Mae Hong Son, the Tulay Trail gives trail runners a menu of distances, ranging from 8 km to a staggering 100 km. Forests, waterfalls, and mountain trails make this one of Thailand’s most rugged trail experiences.
26 October – Lazada Run (Bangkok): This urban half-marathon comes with a twist: a post-race festival powered by e-commerce giant Lazada. Held in Bangkok, it includes 5 km and 10 km categories alongside the half-marathon. Expect entertainment, prizes, and a strong local turnout.
26 October – Scenic Half Marathon (Nakhon Phanom): True to its name, this race offers breathtaking views of the Mekong River with Laos’ mountains just across the water. The flat 21.1 km course winds through one of the most serene towns in the northeast.
November
November ramps up the energy with some of the biggest marathons in Thailand of the year.
9 November – Bangsaen42 Chonburi Marathon: A full-marathon brother to the Bangsaen21, it is a flat, coastal course that draws thousands to the popular beach town of Bang Saen. As a Boston Marathon qualifier certified by AIMS, it’s one of the country’s premier running events. Ocean views and festive crowds make this race a must-run.
12 November – Trail des Orchidées (Chiang Dao): A technical ultra set in Chiang Dao’s mountainous jungle. With 50 km and 90 km options, the course tests runners with elevation, forest paths, and views of rare orchids. Ideal for ultra runners seeking a wild challenge.
16 November – Bangkok Marathon: This midnight marathon begins at Sanam Chai Road near the Grand Palace, letting runners explore Bangkok’s landmarks under the stars. With distances from 5 km to a full marathon, it’s an iconic event that balances heat management with nighttime spectacle.
16 November – Korat Marathon (Nakhon Ratchasima): Northeast Thailand hosts this growing race featuring 5 km, 10 km, half, and full marathon categories. The Korat Marathon is presented by BYD and showcases the heart of Isaan.
Mid-November – Trip & Trail Thailand (Ayutthaya): Part ultra, part cultural exploration. This multi-day 76 km trail run takes participants through the ancient temples and countryside of Ayutthaya. Combining heritage with endurance, it’s a rare chance to run through a UNESCO World Heritage site. The date has not been specified yet and I highly suggest that you follow up for updates.
29–30 November – HOKA Chiang Mai, Thailand by UTMB® (Doi Inthanon): Part of the UTMB World Series, this event begins in Doi Inthanon National Park before moving to Chiang Mai in early December. Runners can choose from ultra distances between 50 km and 170+ km. With points for the UTMB Mont Blanc and world-class terrain, it attracts elite trail runners from around the globe.
30 November – Amazing Thailand Marathon, Bangkok: Thailand’s flagship marathon festival returns with full and half marathons, plus 10 km and fun runs. Unlike the midnight event earlier in the month, this race takes place in daylight and promotes sports tourism in the capital.
Also: Where to travel in October [2025]
December
Closing off 2025, these marathons in Thailand come to a close and runners can end the year strong with several standout races.
14 December – Chiang Mai International Marathon: A festive marathon set in the heart of Chiang Mai. The course loops past key landmarks like Tha Phae Gate and Wat Phra Singh. This race features a marathon, half-marathon, 10 km, and a fun run. For 2025, the event also celebrates 50 years of Thailand–China relations with a cultural exchange theme. It’s a flat and cool run, perfect for chasing PBs.
21 December – Bangsaen21 Half Marathon: Thailand’s top-rated half marathon and an IAAF Platinum Label event. The route runs along Bang Saen’s beachfront, offering stunning ocean views and fast finishing times. Expect international elites and high energy from the local crowd.
21 December – Bangkok Midnight Marathon: Returning for another star-lit adventure, this night race offers runners a different Bangkok experience. The race has two categories of a half-marathon and a 10 km run and the course passes iconic landmarks like the Democracy Monument and Rama VIII Bridge, giving participants a capital city tour under the night sky.
28 December – Photak Marathon (Nong Khai): A scenic year-end marathon that hugs the Mekong River in Nong Khai province. The certified course is also a Boston qualifier, featuring half-marathon and 10 km distances as well. Isaan hospitality and rural charm make it a fitting finale to the year’s running calendar.
Rules and regulations regarding the bibs of the marathons
In a marathon, there is nothing that matters more to the runner and the event makers than the bibs that are worn. These bibs are so integral that you can be disqualified for forgetting them or for handing them off to another person and having them wear them to the marathon.
For some help with the insights that I needed, I have talked to Patompong Suebklai (Air). He is a very avid runner who runs nearly every day and has participated in a lot of the marathons mentioned above (he even suggested some of the marathons in the list as well).
Word of advice for those who are aiming to run the marathon is that you should find out the time and place where you can receive the bibs. According to Air, his experience with the bibs are that they will be collected at a specified location the day before the marathon.
What the runner I consulted with mentioned as well is that the bib is attached to your name as you have registered for it, and the event organisers use this information to properly award you not only the prize but the certificate that you have participated in and completed the marathon.
Any form of cheating in which you have registered the bib in one name and then handed it off to another person can get you banned. An example I was given was that the Bangsaen marathons will ban you for 5 years for both the Bangsaen42 and the Bangsaen21 races. Essentially, you could try your luck at another marathon from a different organisation but I doubt you would make it far if cheating is your forte.
Whether you’re in Bangkok, up in Chiang Mai, or near the Mekong River, Thailand’s Q4 running season is filled with exciting opportunities to challenge yourself, meet fellow runners, and uniquely explore the Kingdom. With events catering to all levels and interests, it’s the perfect time to lace up your shoes and discover Thailand one stride at a time.
Also: Our pick of 5 cycling spots in Bangkok
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