🇹🇭 Thailand: half marathons
40 races scheduled between October 2026 and August 2027. Cities with the most races: Bangkok, Chiang Mai and Nong Phai Lom. Every race lists dates, locations, distances and official links; the list is updated daily.
05DEC 26HALF10K5K
International Anti-Corruption Day RunBangkok · Thailand · in 45 days · 21K · US$26
12DEC 26MARATHON21K10K5K
Scenic Half Marathon Nakhon PhanomNakhon Phanom · Thailand · in 52 days · 42K · US$43.50
13DEC 26MARATHON21K11K6K
Kathu MarathonKathu · Thailand · in 53 days13DEC 26
MARATHON21K10K5K
Photak MarathonBan Phon Thong · Thailand · in 53 days20DEC 26
HALF
Bangsaen21 Half MarathonHuai Kapi · Thailand · in 60 days
20DEC 26MARATHON21K10K3K
Chiang Mai MarathonChiang Mai · Thailand · in 60 days · 42K · US$46
20DEC 26HALF11K6K
Sakon Run DerBan Na Mueang · Thailand · in 60 days