Bangsaen21
Race Day Weather
Warm temps, adjust pace early
Runners will face temperatures starting at 72°F and dropping slightly to 71°F. With humidity at 78% and dew point at 65°F, it's crucial to start conservatively to manage heat stress. A headwind from miles 3-6 will challenge runners, while a tailwind from miles 8-10 will provide relief. Hydration should be prioritized throughout the race to cope with the warm and humid conditions.
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Race Info
Bangsaen21 is a half marathon run each December on the coast road at Bang Saen, Chon Buri Province, Thailand. The race starts before dawn in front of the Bangsaen Heritage Hotel, follows Bangsaen-Angsila Road to a turnaround at the Prayasajja Road junction and returns to the same beachfront finish. It holds a World Athletics Platinum Label, and the course records are 1:01:56 for men (Josphat Kemei, 2022) and 1:07:45 for women (Hellen Obiri, 2022). The time limit is 3 hours 30 minutes.
