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Race Overview
Bangsaen21 is an annual half marathon held along Bang Saen Beach in Chon Buri Province, Thailand, first run in 2005. It carries a World Athletics Platinum Label, the sport's top distance-running distinction, and was Thailand's first race to earn that label. The race starts before dawn on the beachfront road in Bang Saen, loops out along Bangsaen-Angsila Road, and finishes back on the beach promenade. Course records were set in 2022, when Kenya's Josphat Kemei ran 1:01:56 and Hellen Obiri ran 1:07:45.
WikipediaFAQ
When is the 2026 Bangsaen21?
The 2026 Bangsaen21 will be held on Sunday December 20, 2026.
What is the time limit for the Bangsaen21?
The time limit for the Bangsaen21 is 3.5 hours.
Bangsaen21 Weather History
Bangsaen21 Weather Averages
Average Temp: 80°, Average Low: 73°, Average High: 87°
| Time | 4AM | 5AM | 6AM | 7AM |
|---|---|---|---|---|
| Temp | 75° | 74° | 74° | 74° |
| Feel | 76° | 75° | 75° | 75° |
| Rain | - | - | - | - |
| Wind | 5mph | 7mph | 8mph | 7mph |
| Dew | 66° | 64° | 64° | 64° |
| RunScore |  |  | | |
Bangsaen21 2025
Dec 21, 2025
Partly cloudy throughout the day.
Low: 72°, High: 90°
| Time | 4AM | 5AM | 6AM | 7AM |
|---|---|---|---|---|
| Temp | 74° | 73° | 72° | 72° |
| Feel | 74° | 73° | 72° | 72° |
| Rain | - | - | - | - |
| Wind | 5mph | 5mph | 5mph | 7mph |
| Dew | 65° | 63° | 62° | 62° |
| RunScore | | | | |
Bangsaen21 2024
Dec 15, 2024
Partly cloudy throughout the day.
Low: 74°, High: 86°
| Time | 4AM | 5AM | 6AM | 7AM |
|---|---|---|---|---|
| Temp | 78° | 78° | 77° | 74° |
| Feel | 78° | 78° | 77° | 74° |
| Rain | - | - | - | - |
| Wind | 6mph | 7mph | 6mph | 10mph |
| Dew | 68° | 66° | 66° | 62° |
| RunScore | | | | |
Bangsaen21 2023
Dec 17, 2023
Partly cloudy throughout the day.
Low: 80°, High: 95°
| Time | 4AM | 5AM | 6AM | 7AM |
|---|---|---|---|---|
| Temp | 80° | 82° | 81° | 81° |
| Feel | 85° | 87° | 85° | 86° |
| Rain | - | - | - | - |
| Wind | 2mph | 5mph | 7mph | 4mph |
| Dew | 76° | 72° | 72° | 75° |
| RunScore |  | | | |
Bangsaen21 2022
Dec 18, 2022
Partly cloudy throughout the day.
Low: 69°, High: 80°
| Time | 4AM | 5AM | 6AM | 7AM |
|---|---|---|---|---|
| Temp | 71° | 70° | 70° | 69° |
| Feel | 71° | 70° | 70° | 69° |
| Rain | - | - | - | - |
| Wind | 8mph | 14mph | 17mph | 11mph |
| Dew | 59° | 56° | 55° | 56° |
| RunScore | | | | |
Bangsaen21 2020
Dec 20, 2020
Partly cloudy throughout the day.
Low: 71°, High: 83°
| Time | 4AM | 5AM | 6AM | 7AM |
|---|---|---|---|---|
| Temp | 73° | 72° | 72° | 71° |
| Feel | 73° | 72° | 72° | 71° |
| Rain | - | - | - | - |
| Wind | 6mph | 6mph | 8mph | 6mph |
| Dew | 64° | 63° | 61° | 63° |
| RunScore | | | | |
Bangsaen21 2019
Dec 15, 2019
Partly cloudy throughout the day.
Low: 72°, High: 92°
| Time | 4AM | 5AM | 6AM | 7AM |
|---|---|---|---|---|
| Temp |  76° | 72° | 72° | 76° |
| Feel | 76° | 72° | 72° | 76° |
| Rain | - | - | - | - |
| Wind | 0mph | 4mph | 3mph | 6mph |
| Dew | 66° | 66° | 66° | 68° |
| RunScore | | | | |