Thailand
Race Calendar
Type
Region
JULY 2026
13 races
UTKB Khao Lang Baan Trail
5 JUL/PHETCHABUN
Trail13 KM23 KM40 KM60 KM100 KM
Run for the Wild
5 JUL/NAKHON NAYOK
Trail50 KM30 KM15 KM7 KM
★ DOI Recommended
Chiang Mai International Half Marathon
5 JUL/CHIANG MAI
Road21 KM10 KM5 KM
Phrae Ultra 100 the 5th: Keep Going 2026
10–12 JUL/Phrae province
Trail160 KM100 KM60 KM40 KM
Ngorn Nak Trail
12 JUL/KRABI
Trail55 KM25 KM10 KM5 KM
Trail Master Series
12 JUL/RAYONG
Trail
Rimpha X Trail
12 JUL/NAKHON RATCHASIMA
Trail100 KM54 KM30 KM15 KM7 KM
Sakad Scenic Trail
19 JUL/NAN
Trail10 KM25 KM50 KM
Thakham Trail
19 JUL/SONGKLA
Trail15 KM20 KM35 KM
Loei Trail Series
19 JUL/Loei
Trail5 KM25 KM45 KM60 KM
Sukhothai Ultra Marathon
25 JUL/Sukhothai
Road100 KM50 KM
La-Ai Trail
26 JUL/NAKHON SI THAMMARAT
Trail8 KM15 KM27 KM53 KM
Cha-Om Saraburi
26 JUL/Saraburi
Trail10 KM20 KM40 KM60 KM
AUGUST 2026
13 races
Thailand 100k Ultra Marathon
2 AUG/Nakhon Pathom
Road100 KM50 KM
Pattaya Trail
2 AUG/Pattaya
Trail10 KM5 KM
Akha Trail
2 AUG/CHIANG RAI
Trail80 KM58 KM31 KM
★ DOI Recommended
CM6
9 AUG/CHIANG MAI
Trail18.4 KM40 KM57 KM76 KM97 KM137 KM
K
Khaokho Run Through Mist Marathon
9 AUG/PETCHABUN
Road42.195 KM21 KM10 KM5 KM42.195 KM21 KM10 KM5 KM
Khao Jook Dragon Trail 2026
9 AUG/Rayong
Trail30 KM20 KM10 KM5 KM
Wang Pong Trail
16 AUG/Petchabun
Trail13 KM29 KM42 KM
Aokhanom Trail
16 AUG/NAKHON SI THAMMARAT
Trail6 KM15 KM25 KM55 KM
Amico Trail Blend
16 AUG/Rayong
Trail15 KM30 KM40 KM
UBR Peak Challenge
22 AUG/Khon Kaen
Road
Korest X Trail
23 AUG/NAKHON RATCHASIMA
Trail50 KM30 KM17 KM7 KM
Doi Lang Ban Trail
30 AUG/LAMPHUN
Trail50 KM35 KM20 KM8 KM
Park Trail Hatyai
30 AUG/SONGKHLA
Trail3.7 KM8 KM17.2 KM
SEPTEMBER 2026
8 races
Until The Sundown 5
5 SEP/Chiang Mai
Mixed
Ultra Trail Laplae UTLL
6 SEP/UTTARADIT
Trail8 KM20 KM35 KM55 KM70 KM100 KM
Jungle Trail Khao Eto
6 SEP/PRACHIN BURI
Trail10 KM20 KM30 KM50 KM
Changklang Trail
6 SEP/NAKHON SI THAMMARAT
Trail3.5 KM9 KM17 KM37 KM
Khun Huai Lao Luang
13 SEP/Chiang Rai
Trail11 KM22 KM33 KM
The Jungle Trail, Phuket
13 SEP/PHUKET
Trail15 KM25 KM40 KM55 KM75 KM
Muser 100
20 SEP/TAK
Trail166 KM100 KM68 KM40 KM25 KM
Koh Chang Trail
27 SEP/Koh Chang
Trail55 KM30 KM15 KM8 KM
OCTOBER 2026
10 races
CNX100K Ultra Marathon
3 OCT/CHIANG MAI
Road50 KM100 KM
Hin Sam Wan Trail
4 OCT/BUENGKAN
Trail47 KM33 KM8 KM
The Maetho Trail
4 OCT/CHIANG MAI
Trail
★ DOI Recommended
Pong Yaeng Trail
18 OCT/MAE RIM
Trail100 KM70 KM50 KM30 KM20 KM
Khaoyai X Trail
18 OCT/NAKHON RATCHASIMA
Trail50 KM25 KM15 KM8 KM
Tulay Trail
25 OCT/TAK
Trail8 KM25 KM45 KM75 KM100 KM
Trail Master Series - Wangchan Valley
25 OCT/RAYONG
Trail
Nam Nao Geopark Trail
25 OCT/PHETCHABUN
Trail13 KM23 KM37 KM56 KM
Khon Kaen 100 by Ving
25 OCT/KHON KAEN
Road
Trail on the Rock
25 OCT/CHAIYAPHUM
Trail8 KM15 KM32 KM50 KM
NOVEMBER 2026
9 races
Ultra Nakee Naka Trail
1 NOV/NAKHON PANOM
Trail8 KM17 KM34 KM50 KM
Thep Sadet Trail
1 NOV/LAMPANG
Trail100 KM50 KM30 KM15 KM
Phetchabun Skytrail
7 NOV/Phetchabun
Ruammit Ultra Trail 2026
7–8 NOV/Chiang Rai
50 KM35 KM12 KM3 KM
Ultra Trail Pha Hob 2026
7–8 NOV/Lampang province
50 KM35 KM15 KM
Cuesta X Trail
8 NOV/NAKHON RATCHASIMA
Trail5 KM13 KM35 KM55 KM100 KM
Lampang Mysstic Trail
15 NOV/LAMPANG
Trail10 KM25 KM55 KM70 KM
★ DOI Recommended
Pocari Sweat Trail Run
15 NOV/CHIANG MAI
Trail100 KM50 KM40 KM30 KM
★ DOI Recommended
Chiang Mai Thailand by UTMB
29 NOV/CHIANG MAI
Trail20 KM50 KM
DECEMBER 2026
9 races
★ DOI Recommended
Chiang Mai Thailand by UTMB
6 DEC/CHIANG MAI
Trail20 KM50 KM100 KM160 KM
Soimalai Trail - Winter Season
13 DEC/TAK
Trail12 KM33 KM45 KM65 KM100 KM166 KM
Mae Takhrai Trail
13 DEC/MAE ON
Trail10 KM24 KM30 KM50 KM65 KM80 KM100 KM170 KM
Pha Sam Liam Trail
13 DEC/Chiang Mai
Trail5 KM18 KM38 KM
Khaoyai 100k Ultra Marathon
19 DEC/NAKHON RATCHASIMA
Road50 KM100 KM
Tanaosri Trail
20 DEC/RATCHABURI
Trail4 KM11 KM26 KM51 KM104 KM
Chiang Dao 100 Ultra Trail
20 DEC/CHIANG DAO
Trail10 KM20 KM30 KM50 KM100 KM
Lamphun Ultra Marathon
26 DEC/LAMPHUN
Road100 KM
Core X250 Ultra Trail
27 DEC/CHIANG DAO
Trail15 KM30 KM50 KM100 KM250 KM
