Bangkok Marathon

Bangkok Marathon course route

The Bangkok Marathon is a largely flat loop starting and finishing at Sanam Luang by the Grand Palace, passing Wat Pho, Chinatown, and Lumpini Park through the historic core. Minor bridge rises and the tropical heat add the main difficulty, while spectators line Sanam Luang and organised cheer points through the old city.

Bangkok Marathon elevation profile

The Bangkok Marathon course is mostly flat with gentle undulations over 42.195 km (26.2 miles). Runners cover 5 metres of climbing and 5 metres of descent, with minimal net elevation change from start to finish.

Entry requirements

The Bangkok Marathon accepts entries through the official Amazing Thailand Marathon website, with registration usually opening several months before the late-November race. Entry is first-come, first-served with no ballot or qualifying time required. International runners apply through the same online portal; because the field includes large numbers of half-marathon and shorter-distance participants, marathon places can fill ahead of race day.

Bangkok Marathon course video

Race-day footage from the course to help you picture the route, crowds, and key landmarks on marathon day.

Bangkok F1 10K Marathon | Test Route | 10k

Frequently Asked Questions

What is the Bangkok Marathon elevation profile?

The Bangkok Marathon has 5 metres of total climbing and 5 metres of descent over 42.195 km (26.2 miles). The course is mostly flat with gentle undulations, with 0 metres of net change from start to finish.

How long is the Bangkok Marathon?

The Bangkok Marathon is the standard marathon distance of 42.195 kilometres (26.2 miles), certified to World Athletics rules. Starts and finishes at Sanam Luang near the Grand Palace.

Is the Bangkok Marathon flat?

Yes. The Bangkok Marathon is mostly flat with gentle undulations with 5 metres of total climbing over 42.195 km (26.2 miles) — a profile that suits runners chasing personal bests or Boston qualifying times.

What time does the Bangkok Marathon start?

The 2026 Bangkok Marathon starts at 3:00 am local time on Sunday, 29 November 2026. Arrive early for baggage drop and corral access — official race communications on amazingthailandmarathon2025.com/ confirm any last-minute schedule changes.

Is the Bangkok Marathon one of the world's flattest?

Yes. Bangkok is almost entirely at sea level, and the marathon course reflects this — with only around 5 metres of total elevation gain, it is one of the flattest marathon routes on the planet. The challenge is not terrain but heat and humidity.

Does the Bangkok Marathon pass the Grand Palace?

Yes. The route takes runners through the historic Rattanakosin Island area, passing near the Grand Palace complex, Wat Pho, and along the Chao Phraya River — giving a memorable tour of Bangkok's royal and religious heritage.

When is the Bangkok Marathon held?

The race is typically held in late November, after the Thai monsoon season ends and temperatures dip slightly — though Bangkok in November still averages 28–32 °C with high humidity. An early morning start (usually 2–4 am) helps runners beat the worst of the heat.

How do runners manage the heat at the Bangkok Marathon?

Race organisers provide frequent water and electrolyte stations, cooling sponges, and ice. Runners are advised to start conservatively and prioritise hydration over pace. Acclimatising in Bangkok for a few days before the race is beneficial.

What is the atmosphere like at the Bangkok Marathon?

Bangkok's vibrant street culture translates into enthusiastic crowd support along the route, with temple monks, traditional Thai music, and street food stalls lining parts of the course — a distinctive atmosphere compared with most Western city marathons.