2026 Amazing Thailand Marathon Bangkok - Nov 29

Loop marathon course in Bangkok with 5m elevation gain. Flat loop course starting and finishing at Sanam Luang beside the Grand Palace — one of the flattest urban marathons in the world. The Phra Pinklao and Rama VIII bridge crossings and one elevated-road ramp, all inside the first 5 km, are the only real elevation. Heat and humidity, not terrain, are the challenge