Marathons in Thailand
35 upcoming races are listed in Thailand, including 16 marathons, 10 half marathons and 15 ultras. The next is Thep Sadet Trail - 36K on October 31, 2026.
December has the most races. Race pages link the official source where we have one. Confirm dates and prices with the organizer before you register.
35
Races listed
16
Marathons
December
Busiest month
24 Jul
Last updated
| Date | Race | City | Distances | Entry | From |
|---|---|---|---|---|---|
| 31 Oct 2026 31Oct 26 | Thep Sadet Trail - 36K | - | 36K | - | - |
| 7 Nov 2026 07Nov 26 | Cuesta X Trail - 104K | - | 104K | - | - |
| 8 Nov 2026 08Nov 26 | Bangsaen42 Chonburi Marathon | - | 42.2K | - | - |
| 8 Nov 2026 08Nov 26 | Korat Marathon Open | - | 42.2K · 21.1K · 10K | Open | - |
| 15 Nov 2026 15Nov 26 | Bangsaen42 Chonburi Marathon | - | 42.2K | - | - |
| 15 Nov 2026 15Nov 26 | BDMS Bangkok Marathon | Bangkok | 42.2K · 21.1K · 10K | - | THB 800–THB 1,500 |
| 15 Nov 2026 15Nov 26 | Korat Marathon | - | 42.2K · 21.1K · 10K | - | - |
| 28 Nov 2026 28Nov 26 | Hoka Chiang Mai Thaïland by UTMB® | - | Ultra · 21.1K · ELEPHANT 100 | - | - |
| 29 Nov 2026 29Nov 26 | Amazing Thailand Marathon Bangkok - Official Bangkok Capital City Marathon | - | 42.2K | - | - |
| 4 Dec 2026 04Dec 26 | 3rd Chiangmai Thailand by UTMB - CHIANG DAO 160 - 162km | - | 162K | - | - |
| 6 Dec 2026 06Dec 26 | Photak Marathon | - | 42.2K · 21.1K · 10K | - | - |
| 11 Dec 2026 11Dec 26 | Mae Takhrai Trail - 177K | - | 177K | - | - |
| 12 Dec 2026 12Dec 26 | Mae Takhrai Trail - 107K | - | 107K | - | - |
| 12 Dec 2026 12Dec 26 | Mae Takhrai Trail - 72K | - | 72K | - | - |
| 12 Dec 2026 12Dec 26 | Mae Takhrai Trail - 84K | - | 84K | - | - |
| 12 Dec 2026 12Dec 26 | Scenic Marathon Nakhon Phanom | - | 42.2K | - | - |
| 13 Dec 2026 13Dec 26 | Photak Marathon | - | 42.2K | - | - |
| 13 Dec 2026 13Dec 26 | Scenic Half Marathon Nakhon Phanom | - | 21.1K | - | - |
| 19 Dec 2026 19Dec 26 | Chiang Dao 100 - 104K | - | 104K | - | - |
| 20 Dec 2026 20Dec 26 | Bangsaen21 | - | 21.1K | - | - |
| 20 Dec 2026 20Dec 26 | Chiang Mai Marathon | Chiang Mai | 42.2K · 21.1K · 10K | - | THB 700–THB 1,400 |
| 8 Jan 2027 08Jan 27 | Ultra Trail Chiang Mai 2027 - 200K | - | 200K | - | - |
| 9 Jan 2027 09Jan 27 | 2nd Thailand 12H - 12h | - | Ultra · 12h | - | - |
| 9 Jan 2027 09Jan 27 | 2nd Thailand 24H - 24h | - | Ultra · 24h | - | - |
Around Thailand
This is the most detailed level of the directory. Widen the search to the surrounding region.
Common questions
When is the next race in Thailand?
Thep Sadet Trail - 36K on October 31, 2026. The table above lists every upcoming race in date order.
Which months are busiest in Thailand?
December (12), January (9), November (8), counting every upcoming race listed in Thailand.
Which distances can I run in Thailand?
The listed races include 16 marathons, 10 half marathons, 15 ultras, 6 10Ks and 5 5Ks. Many events offer more than one distance on the same day.
How do I confirm a race’s details?
Open the race page and check its provenance ledger, which shows where each fact came from. Then confirm the date, price and entry rules with the organizer before you register or book travel.
Spotted something wrong on this page?
Dates and prices move · tell us and we check the organizer’s source