Khaoyai-Prachin Ultra 2026
7-8 March 2026
King Mongkut's University of Technology North, Prachin Buri province
สวรรค์ รำไร ULTRA MARATHON 2026
18-19 April 2026
Sawan Park (Nong Somboon), Nakhon Sawan province
Suanpruek99 10-Hour UltraMarathon 2026
May 10, 2026
Nawaminphirom Park, Bungkhum, Bangkok
Khaolangbann Trail 2026
4-5 July 2026
Thung Samo Subdistrict Administrative Organization, Phetchabun province
Jungle-Trail Khao Eto. 2026
September 6, 2026
Khao Ito Waterfall Recreational Forest Forest in Muang Doem, Mueang Prachin Buri District, Prachin Buri province
Saturday, February 21, 2026
PHU WIANG ULTRA TRAIL 2026
21-22 February 2026
อุทยานแห่งชาติภูเวียง, Khon Kaen province
Saturday, March 7, 2026
Khaoyai-Prachin Ultra 2026
7-8 March 2026
King Mongkut's University of Technology North, Prachin Buri province
Sunday, March 15, 2026
Nong PraJak Ultra100
March 15, 2026
หนองประจักษ์อุดร, Udon Thani province
Saturday, March 28, 2026
Hatyai Khohong Trail - ป่าในเมือง 2026
28-29 March 2026
สวนสาธารณะเทศบาลนครหาดใหญ่, Songkhla province
Saturday, April 18, 2026
สวรรค์ รำไร ULTRA MARATHON 2026
18-19 April 2026
Sawan Park (Nong Somboon), Nakhon Sawan province
Thursday, April 30, 2026
Amazean Jungle Thailand by UTMB 2026
Apr 30 - May 3, 2026
Betong Mongkollit Tunnel, Yala province
Friday, May 1, 2026
Koh Chang Tai Charity Trail 2026
1-3 May 2026
โรงเรียนวัดสลักเพชร เกาะช้าง, Trat province
Saturday, May 2, 2026
Koh Chang Tai Charity Trail 2026
2-3 May 2026
Ko Chang, Trat province
Sunday, May 10, 2026
Suanpruek99 10-Hour UltraMarathon 2026
May 10, 2026
Nawaminphirom Park, Bungkhum, Bangkok
Saturday, June 27, 2026
The North Face 100 Ultra-Trail challenge Thailand 2026
27-28 June 2026
Jedkod- Pongkonsao Natural Study & Eco Center, Saraburi province
Sunday, June 28, 2026
Ultra-Trail Khao Kho Season 6
June 28, 2026
เบิร์ดแลนดรีสอร์ท อ.เขาค้อ, Phetchabun province
Saturday, July 4, 2026
Khaolangbann Trail 2026
4-5 July 2026
Thung Samo Subdistrict Administrative Organization, Phetchabun province
Sunday, July 5, 2026
Run For The Wild 2026
July 5, 2026
Wangree Resort and Spa, Nakhon Nayok province
Saturday, July 25, 2026
Sukhothai 100 Ultra Marathon 2026
25-26 July 2026
โรงเรียนชัยมงคลพิทยา, Sukhothai province
Saturday, August 1, 2026
AKHA Trail 2026
1-2 August 2026
Ban Pha Hee School, Chiang Rai province
หนองคายรันนิ่งเฟสติวัล 2569
August 1, 2026
Wat Champa Thong, Nong Khai province
Sunday, September 6, 2026
Jungle-Trail Khao Eto. 2026
September 6, 2026
Khao Ito Waterfall Recreational Forest Forest in Muang Doem, Mueang Prachin Buri District, Prachin Buri province
Friday, September 18, 2026
MUSER100 2026
18-20 September 2026
ศูนย์วิจัยและพัฒนาการเกษตรตาก, Tak province
Saturday, October 10, 2026
Nan Mountain Trail 2026
10-11 October 2026
Prakit Vejchasak School, Na Noi District, Nan province
Sunday, November 1, 2026
THEP SADET TRAIL 2026
November 1, 2026
องค์การบริหารส่วนตำตลเทพเสด็จ ต.เทพเสด็จ อ.ดอยสะเก็ด, Chiang Mai province