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If you’re looking for a reason to combine running and travel, the Chiang Mai Marathon is one of the most suitable events in Southeast Asia. Every December, thousands of runners from dozens of countries gather at the historic Tha Pae Gate to run through the streets of the ancient capital of Lanna. Distances to choose from: the full marathon of 42 km, the half marathon of 21 km, a 10 km race, and a family fun run of 3 km. In 2026, the start is scheduled for December 20 — the coolest period of the year in Chiang Mai.
Current as of December 2026. Registration terms and fees may change; we recommend checking the official website.
What is this holiday?
Chiang Mai Marathon is an international running event held annually in Chiang Mai since 2007. The race quickly gained popularity and now attracts participants from more than 50 countries. It is more than a sporting event; it is a true celebration of running that brings together elite marathoners and amateurs running their first race.
The route runs through the historic center of the city, past Buddhist temples, along the moat of the Old City, and through quiet morning streets. For many runners, it is the atmosphere and scenery that make this marathon in Thailand special: instead of the usual megacities, there are mountain air, temple spires, and spectators who come out to cheer on the runners from early morning. 🇹🇭
By the way, Chiang Mai was not chosen as the venue by accident. It is one of the best cities in Asia · RU with well-developed infrastructure, affordable housing, and unique Lanna culture.
When and where it takes place
Date in 2026: December 20 (Sunday). The full marathon starts at 3:00 a.m., the half marathon usually starts a bit later, and the 10 km and 3 km races start closer to dawn. The exact schedule is published on the official Chiang Mai Marathon website.
The start and finish are at Tha Pae Gate, the main landmark of Chiang Mai’s Old City. It is the most recognizable spot in the city: brick gates from the XIII century on the east side of the historic moat.
December is peak season in northern Thailand. Morning temperatures can drop to +15–18 °C, which makes for ideal conditions for running a marathon. It warms up to +28 °C during the day, but the heat has not yet set in by the time most participants finish.
Traditions and how it is celebrated
The early 3 a.m. start is not the organizers’ whim. It is a well-considered decision: runners cover the main distance in the cool air and finish at dawn, when the city is just waking up. The sight is impressive: thousands of headlamps move through the dark streets past illuminated temples. ☀️
Runners of all levels come to the race. The full 42K distance is for serious marathoners. The 21K half marathon is the most popular category, chosen by both well-prepared amateurs and tourist runners. The 10K suits those who want to test themselves without extreme exertion. And the 3K is a family run, which people join with their children.
After the finish, participants receive medals and can enjoy the morning in Chiang Mai: fresh coffee at an Old City café, breakfast at a market, and a little later, a massage for tired legs. The city is used to this and happily welcomes runners. By the way, many participants stay for several days to explore temples, mountain trails and unusual places such as the “Castle of Flowers” · RU.
Practical tips for tourists
Registration. You can sign up for the race through the official website. The approximate cost of entry ranges from 500 to 1,500 ฿ depending on the distance. Early registration is usually cheaper, and popular categories sell out quickly, so don’t put it off.
How to get there. There are direct flights to Chiang Mai from Bangkok (about 1 hour 15 minutes), and there are night trains and buses. From Chiang Mai Airport to Tha Pae Gate it takes about 15 minutes by taxi. ✈️
What to bring. Running in the tropics, even in the cool season, has its own specifics:
- Lightweight running gear (it is cool in the morning, but you warm up quickly while running)
- Headlamp — the start is before dawn, and lighting is not bright everywhere
- Sunscreen — you will need it on the final kilometers
- Comfortable shoes for walking after the race — your feet will thank you
Housing. Book in advance: Chiang Mai is popular with tourists in December, and rooms are scarce on marathon weekend. The Old City area is the best choice for walking to the start. 💰
An important note: check the current cost and schedule on the official website — conditions may change from year to year.
Frequently Asked Questions ❓
When is the marathon in Chiang Mai held in 2026?
The race is scheduled for December 20, 2026. The full marathon starts at 3:00 a.m. Check the official website for the schedule of the other distances, as the exact start times may be adjusted.
What distances are available at the Chiang Mai Marathon?
The organizers offer four options: the full marathon (42K), the half marathon (21K), a 10-kilometer race, and a family fun run of 3 kilometers. Everyone can find a suitable format, from professionals to beginner runners.
How much does it cost to take part?
The approximate cost is from 500 to 1,500 ฿ depending on the distance and registration timing. Terms and prices may change, so we recommend checking current information at chiangmaimarathon.com.
Where is the marathon start?
The start and finish are at Tha Pae Gate in the center of Chiang Mai’s Old City. It is easy to find — one of the city’s main sights, and convenient to reach from any district.
What is the weather like in Chiang Mai in December?
December is the coolest month in Chiang Mai. Mornings can drop to +15–18 °C, and afternoons reach about +28 °C. These are comfortable conditions for running, but it is worth having a light jacket with you after the finish.
Conclusion
The Chiang Mai Marathon is a rare blend of athletic challenge and real travel. Running through the night streets of the ancient capital of Lanna, finishing at dawn by medieval gates, and spending the remaining days among temples and mountain trails — these are impressions that will stay with you for a long time. Check the schedule on the official website, register early, and come to Chiang Mai to run and discover.