Bangsaen21 2026
RunningBang Saen, Chonburi, Thailand
Built for speed, Bangsaen21 is a half-marathon-only race with World Athletics Platinum Label status and a 12,000-strong field, just an hour from Bangkok in Chonburi.
Race categories
21.0975 km
Race morning
Dawn temperature in race week, the last 10 years
The average daily low across the week around race day. The dashed line is a typical Singapore dawn.
Source: Open-Meteo historical weather (ERA5). Singapore's typical dawn is its average daily low, 24°C (2021–2025).
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About this race
When is Bangsaen21 2026?
Bangsaen21 2026 is on Sunday 20 December 2026, in Bang Saen, Chonburi, Thailand.
How do I enter?
Entry runs through the organiser. Start at the official site and check it for registration dates, prices and any ballot.
What distances are there?
21.0975 km.