Bangsaen21
Road Running covering 21.1 km in Chon Buri, Thailand
Bangsaen21 is an endurance sporting event in Chon Buri, Changwat Chon Buri, TH focused on Road Running. It is part of World Athletics Platinum Label, World Athletics Label. Key features include City Run, Night Run, Festive.
The competition program features Half Marathon (21.1 km, +95 m D+). The next edition is officially confirmed for December 20, 2026. Official race regulations, course details, and registration information are provided on the organizer's website (bangsaen21.com).

Races & distances (1)
| Competition | Discipline | Distance | Elevation gain | Altitude range | Course type | Course & profile |
|---|---|---|---|---|---|---|
| Half Marathon | Road Running | 21.1 km | +95 m | 59 m - 99 m | Loop course | Route & profile |
Course route & map
Elevation profile & course telemetry
Altitude from 59 m to 99 m above sea level (+95 m D+, -95 m D-)
Frequently asked questions (FAQ)
When and where does Bangsaen21 take place?
Bangsaen21 takes place in Chon Buri, Changwat Chon Buri, TH (start area at coordinates 13.3622° N, 100.9835° E). The next edition is officially confirmed for December 20, 2026.
What races and distances are offered at Bangsaen21?
The competition program features Half Marathon (21.1 km, +95 m D+). The competitions belong to Road Running.
What is the course layout and elevation profile for Bangsaen21?
The main competition (Half Marathon over 21.1 km) is designed as a loop course featuring +95 m of elevation gain and -95 m of elevation loss, ranging between 59 m and 99 m above sea level. An interactive course map with route visualization, elevation profile, and GPX export is available in the course section on this page.
Where can I find registration and official race rules for Bangsaen21?
Official race regulations, course details, and registration information are provided on the organizer's website (bangsaen21.com).