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Race Overview
The Chombueng Marathon is one of Thailand's longest-running marathons and a Boston Marathon qualifier, held in Chom Bueng, Ratchaburi Province, starting and finishing at Muban Chom Bueng Rajabhat University. It is a full member race of the Association of International Marathons and Distance Races, held annually on the third Sunday of January. The marathon starts at 3:00 AM to beat the heat, with a half marathon at 5:00 AM and a 10K mini marathon at 6:00 AM the same morning. The rural course is often described as flat, but its steady elevation gain over the full distance makes it more demanding than its reputation suggests.
WikipediaFAQ
When is the 2027 Chombueng Marathon?
The 2027 Chombueng Marathon will be held on Sunday January 17, 2027.
Is the Chombueng Marathon a Boston Marathon Qualfier?
Yes, the Chombueng Marathon is an official Boston Marathon qualifier.
What is the time limit for the Chombueng Marathon?
The time limit for the Chombueng Marathon is 7 hours.
Chombueng Marathon Weather History
Chombueng Marathon Weather Averages
Average Temp: 77°, Average Low: 67°, Average High: 91°
| Time | 3AM | 4AM | 5AM | 6AM | 7AM | 8AM | 9AM | 10AM |
|---|---|---|---|---|---|---|---|---|
| Temp | 69° | 70° | 68° | 67° | 67° | 69° | 78° | 82° |
| Feel | 69° | 70° | 68° | 67° | 67° | 69° | 78° | 83° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 3mph | 1mph | 3mph | 3mph | 1mph | 3mph | 3mph | 5mph |
| Dew | 65° | 67° | 65° | 64° | 65° | 65° | 67° | 65° |
| RunScore |  |  | | | | | | |
Chombueng Marathon 2026
Jan 18, 2026
Becoming cloudy in the afternoon.
Low: 67°, High: 87°
| Time | 3AM | 4AM | 5AM | 6AM | 7AM | 8AM | 9AM | 10AM |
|---|---|---|---|---|---|---|---|---|
| Temp |  68° | 68° | 67° | 67° |  67° | 70° | 78° | 80° |
| Feel | 68° | 68° | 67° | 67° | 67° | 70° | 78° | 80° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 3mph | 3mph | 3mph | 3mph | 3mph | 3mph | 3mph | 4mph |
| Dew | 67° | 67° | 66° | 65° | 66° | 67° | 69° | 70° |
| RunScore | | | | | | | | |
Chombueng Marathon 2025
Jan 19, 2025
Partly cloudy throughout the day.
Low: 63°, High: 89°
| Time | 3AM | 4AM | 5AM | 6AM | 7AM | 8AM | 9AM | 10AM |
|---|---|---|---|---|---|---|---|---|
| Temp | 67° | 65° | 65° | 63° | 63° | 66° | 74° | 79° |
| Feel | 67° | 65° | 65° | 63° | 63° | 66° | 74° | 79° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 0mph | 0mph | 0mph | 0mph | 0mph | 1mph | 1mph | 5mph |
| Dew | 60° | 61° | 60° | 59° | 60° | 60° | 61° | 60° |
| RunScore | | | | | | | | |
Chombueng Marathon 2024
Jan 21, 2024
Partly cloudy throughout the day.
Low: 72°, High: 95°
| Time | 3AM | 4AM | 5AM | 6AM | 7AM | 8AM | 9AM | 10AM |
|---|---|---|---|---|---|---|---|---|
| Temp | 73° | 75° | 73° | 73° | 72° | 72° | 82° | 85° |
| Feel | 73° | 75° | 73° | 73° | 72° | 72° | 86° | 88° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 3mph | 0mph | 3mph | 4mph | 0mph | 4mph | 3mph | 3mph |
| Dew | 70° | 70° | 69° | 68° | 68° | 68° | 68° | 67° |
| RunScore | | | | | | |  | |
Chombueng Marathon 2023
Jan 15, 2023
Clear conditions throughout the day.
Low: 66°, High: 94°
| Time | 3AM | 4AM | 5AM | 6AM | 7AM | 8AM | 9AM | 10AM |
|---|---|---|---|---|---|---|---|---|
| Temp | 68° | 72° | 66° |  66° | 69° | 66° | 76° | 83° |
| Feel | 68° | 72° | 66° | 66° | 69° | 66° | 76° | 85° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 4mph | 0mph | 4mph | 5mph | 3mph | 4mph | 4mph | 8mph |
| Dew | 66° | 70° | 65° | 65° | 67° | 65° | 68° | 65° |
| RunScore |  | | | | | | | |