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
Namnao Geopark Trail 2026
October 25, 2026
Wadpha Dong Mafai, Khokmon, Nam Nao, Phetchabun province
Pangsida Camp Trail 2026
November 22, 2026
Pang Sida National Park Office, Sa Kaeo 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
Friday, July 10, 2026
Phrae Ultra 100 the 5th: Keep Going 2026
10-12 July 2026
Ban Suan Khuean Schoo, Phrae province
Saturday, July 11, 2026
หงอนนาคเทรล Ngorn Nak Trail 2026
11-12 July 2026
Klong Muang Beach, Krabi province
Sunday, July 12, 2026
TMS2026 - PRO 3 RACE
July 12, 2026
St.Andrews Green Valley, Rayong province
Sunday, July 19, 2026
PHUKHRANG TRAIL 2026
July 19, 2026
วัดป่าห้วยลาด อ.ภูเรือ, Loei 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, August 2, 2026
Thailand 100K Ultra Marathon 2026
August 2, 2026
สนามกีฬากลาง 1 มหาวิทยาลัยเกษตรศาสตร์ วิทยาเขตกำแพงแสน, Nakhon Pathom province
Sunday, August 23, 2026
KORAT X TRAIL 2026
August 23, 2026
จุดสกัดซับยาง เขตห้ามล่าสัตว์ป่า ป่าเขาภูหลวง ต.ลำนางแก้ว อ.ปักธงชัย, Nakhon Ratchasima province
Saturday, August 29, 2026
DOI LANG BAN TRAIL 2026
29-30 August 2026
Wat Nam Phu School, Lamphun province
Sunday, August 30, 2026
UTHAI TRAIL 2026 อุทัยเทรลครั้งที่ 3
August 30, 2026
วัดถ้ำเขาวง อ.บ้านไร่, Uthai Thani province
Saturday, September 5, 2026
Legacy Doi Chang 2026
5-6 September 2026
Doi Chang, Mae Suai, Chiang Rai 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
Sunday, September 13, 2026
Phet Khao Daen Trail 2026
September 13, 2026
Khao Daen, Phetchaburi province
Friday, September 18, 2026
MUSER100 2026
18-20 September 2026
ศูนย์วิจัยและพัฒนาการเกษตรตาก, Tak province
Friday, September 25, 2026
BTC100 Bitcoin Ultra Trail 2026
25-27 September 2026
สถาบันวิจัยดาราศาสตร์แห่งชาติ, Chiang Mai province
Sunday, September 27, 2026
KOH CHANG TRAIL 2026
September 27, 2026
Bang Bao School, Trat province
Sunday, October 4, 2026
Hin Sam Wan Trail
October 4, 2026
Hin Sam Wan Recreation Forest, Bueng Kan province
Saturday, October 10, 2026
Nan Mountain Trail 2026
10-11 October 2026
Prakit Vejchasak School, Na Noi District, Nan province
Saturday, October 17, 2026
Pong Yaeng Trail 2026
17-18 October 2026
บ้านไร่ไอนรา คาเฟ่ พื้นที่โป่งแยง อ.แม่ริม, Chiang Mai province
Udonthani 100
17-18 October 2026
โรงเรียนบ้านผาสิงห์ ต.หมากหญ้า อ.หนองวัวซอ, Udon Thani province
Sunday, October 18, 2026
Khaoyai X Trail 2026
October 18, 2026
Ban Nong Taku School, Nakhon Ratchasima province
Sunday, October 25, 2026
Namnao Geopark Trail 2026
October 25, 2026
Wadpha Dong Mafai, Khokmon, Nam Nao, Phetchabun province
TRAIL ON THE ROCK 2026 by Run Happy Series
October 25, 2026
โรงเรียนบ้านหนองใหญ่ ต.บ้านไร่ อ.เทพสถิต, Chaiyaphum province
Sunday, November 1, 2026
THEP SADET TRAIL 2026
November 1, 2026
องค์การบริหารส่วนตำตลเทพเสด็จ ต.เทพเสด็จ อ.ดอยสะเก็ด, Chiang Mai province
Saturday, November 7, 2026
Ruammit Ultra Trail 2026
7-8 November 2026
Ban Ruammit School, Chiang Rai province
Ultra Trail Pha Hob 2026
7-8 November 2026
ผาหอบ อ.แม่เมาะ, Lampang province
Saturday, November 14, 2026
LAMPANG MYSSTIC TRAIL 2026
14-15 November 2026
Thai Elephant Conservation Center, Hang Chat, Lampang province
Saturday, November 21, 2026
AIA One Billion Trail 2026 by TMS
November 21, 2026
Rajamangala University of Technology Rattanakosin, Wang Klai Kangwon Campus, Hua Hin, Prachuap Khiri Khan province
Sunday, November 22, 2026
Pangsida Camp Trail 2026
November 22, 2026
Pang Sida National Park Office, Sa Kaeo province
Saturday, December 5, 2026
Ubonratchathani 100K Ultra Marathon
5-6 December 2026
Huai Muang Public Park, Ubon Ratchathani province
Saturday, December 19, 2026
CHIANG DAO 100 Ultra-Trail 2026 Presented by DECATHLON
19-20 December 2026
Ban Mae Na School, Chiang Mai province
Wednesday, December 23, 2026
CORE X250 Ultra Trail 2026
23-27 December 2026
Chiang Dao Youth Camp, Chiang Mai province
Friday, January 8, 2027
UTCM Ultra Trail Chiang Mai 2027
8-10 January 2027
องค์การบริหารส่วนตำบลเมืองคอง อ.เชียงดาว, Chiang Mai province