Ultramarathons in Thailand

40 upcoming ultramarathons in Thailand.

22 cities

Busiest: November

From €62

See all 40 races

Distance

5K races 10K races Half marathons Marathons Ultramarathons

Terrain

Trail Road

See all 40 races

Upcoming races

24H Bangkok International Championships

Bangkok, Thailand

Oct 31·Tomorrow·Closed·From €19

THEP SADET TRAIL 2026

Chiang Mai, Thailand

Oct 31·Tomorrow·Closed·From €1,400

47.8km

ULTRA NAKEE NAKA TRAIL 2026 - KLED NAK 50

Ban Phaeng, Thailand

Nov 1·This weekend

6th Cuesta X Trail - CXT-100

Nakhon Ratchasima, Thailand

Nov 7·In 8 days

55.7km

Samui Trail 2026 - 55K

Koh Samui, Thailand

Nov 7·In 8 days·Registration TBC

104.5km

Cuesta X Trail 2026 - CXT-100

Sikhiu, Thailand

Nov 7·In 8 days

Samui Trail

Koh Samui, Thailand

Nov 7·In 8 days·From €18

5th Cuesta X Trail - CXT-50

Nakorn Ratchasima, Thailand

Nov 8·In 9 days·Registration TBC

Phetchabun Sky Trail 2026

Lom Kao, Thailand

Nov 8·In 9 days·Registration TBC

47.2km

Ultra Trail Pha Hob 2026 - UTPH50

MAE MOH, Thailand

Nov 8·In 9 days

50.1km

Ruammit Ultra Trail 2026 - 50K

Chiang Rai, Thailand

Nov 8·In 9 days·Closed·From €3,150

AIA One Billion Trail

Hua Hin, Thailand

Nov 21·In 3 weeks·Closes Oct 31·From €32

50.4km

AIA ONE BILLION TRAIL 2026 - 50K

HUAHIN, Thailand

Nov 21·In 3 weeks·From €3,000

500 Thailand

Pai, Thailand

Nov 22·In 3 weeks·Closed·From €188

2nd 100 Thailand

Pai, Thailand

Nov 22·In 3 weeks·Registration TBC

2nd 300 Thailand

Pai, Thailand

Nov 25·In 3 weeks·Registration TBC

Chiang Mai Thailand by UTMB

Chiang Mai, Thailand

Nov 27·In 4 weeks·From €300

Hoka Chiang Mai Thaïland by UTMB® 2026

Chiang Mai, Thailand

Nov 28·In 4 weeks·Registration TBC·From €300

173K

3rd Chiangmai Thailand by UTMB - CHIANG DAO 160 - 173km

CHIANG DAO 160

Chiang Mai Thailand by UTMB®

Chiang Mai, Thailand

Dec 4·From €1,900

63K

3rd Chiangmai Thailand by UTMB - HMONG 50-DAY - 63K

Chiang Mai, Thailand

Dec 5·Registration TBC·From €6,800

HMONG 50-DAY - 50K

HMONG 50-NIGHT - 63K

Mae Takhrai Trail 2026 - MTKT170

San Kamphaeng, Thailand

Dec 11

160.9km

3rd Soi Malai Trail Winter 100 Miles - 100M

Doi Soi Malai, Thailand

Dec 11·Registration TBC

65K

3rd Soi Malai Trail Winter 65 km - 65K

Doi Soi Malai, Thailand

Dec 12·Registration TBC

Tanaosri Trail

Suan Phueng, Thailand

Dec 19·From €8

Chiang Dao 100 Ultra-Trail

Chiang Dao, Thailand

Dec 19·Closes Nov 19·From €45

2nd Chiang Dao

Chiang Dao, Thailand

Dec 19·Registration TBC

104.5km

CHIANG DAO 100 2026 - CD100

Chiang Dao, Thailand

Dec 19

CHIANG DAO 100 Ultra-Trail 2026 Presented by DECATHLON (2nd Edition)

Chiang Dao, Thailand

Dec 19·Closes Nov 19·From €1,600

Sriracha Ultra 100

Bang Phra, Si Racha District, Thailand

Dec 26·From €57

200K

Ultra Trail Chiang Mai 2027 - GT200

Chiang Mai, Thailand

Jan 8, 2027

Ultra Trail Chiang Mai - UTCM

Chiang Dao, Thailand

Jan 8, 2027·Closes Oct 31·From €44

Nan Ultra 100

Na Noi, Thailand

Jan 16, 2027·From €39

75.9km

LKLDMT 2027 - LKL77

Khun Chae NP, Thailand

Jan 16, 2027

Trail Masters Series - Wisdom Valley

Khao Mai Kaeo, Thailand

Feb 7, 2027·From €21

AKHA Trail

Mae Sai, Thailand

Jul 31, 2027·From €35

162K

8th Chiangmai Thailand by UTMB - CHIANG DAO 160 - 162km

Chiang Dao, Thailand

Dec 5, 2027·Registration TBC

Your guide to ultramarathons in Thailand

There are 40 upcoming ultramarathons in Thailand, spread across 22 cities. Filter by distance or terrain to narrow things down, and save the races you like the look of.

Most take place in November, December and January. Next up is 24H Bangkok International Championships - 100K in Bangkok on 31 October 2026.

Questions runners ask

How many ultramarathons in Thailand are there?

Finndu lists 40 upcoming ultramarathons in Thailand, across 22 towns and cities. The list is updated twice a day as organisers announce new races.

When is the next one?

24H Bangkok International Championships in Bangkok, on 31 October 2026.

Which month has the most ultramarathons in Thailand?

November, followed by December and January.

How much does it cost to enter?

Entry starts from €62. Fees vary from race to race, so check each race page for its current price.

Explore more races

Ultramarathons in Thailand

Upcoming races

Your guide to ultramarathons in Thailand

Questions runners ask

How many ultramarathons in Thailand are there?

When is the next one?

Which month has the most ultramarathons in Thailand?

How much does it cost to enter?

Explore more races

Other distances in Thailand

Ultramarathons in nearby countries

Thailand by terrain

Ultramarathons in Thailand by month

Ultramarathons by region

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