Seogwipo, South Korea · Trail
Official site ↗TransJeju by UTMB
A UTMB World Series weekend on Jeju Island, South Korea, in October: a 148 km with 5,000 m of climbing and a 104 km from the Jeju World Cup Stadium, and a 60 km from Gasiri.
Completed October 2, 2026
Jeju100K
women
- 1. Lingjie Chi12:15:06
- 2. Marcela Vasinova13:25:05
men
- 1. Ruqin Wang10:11:33
- 2. Koken Ogasawara10:42:16
- 3. Terunobu Kurokawa10:47:17
Jeju60K
women
- 1. Kaili Fan5:30:34
- 2. Ayaka Ueda5:47:22
- 3. Sisi Xiong5:49:54
men
- 1. Yoshiki Hoshino5:03:23
- 2. Hiroki Kai5:24:07
- 3. Hikaru Kitamura5:26:26
Distances
Jeju100M
- Distance
- 148 km (92 mi)
- Vert gain
- 5,000 m (16,400 ft)
- Start
- 9:00 PM GMT+9
- Cutoff
- 37 hr
Starts from the Jeju World Cup Stadium at 9 p.m. Friday; the finish closes at 10 a.m. Sunday · WSER 2027 qualifier (sub-37:00)
Jeju100K
- Distance
- 104 km (65 mi)
- Vert gain
- 4,000 m (13,100 ft)
- Start
- Oct 3, 5:00 AM GMT+9
- Cutoff
- 29 hr
Starts from the Jeju World Cup Stadium at 5 a.m. Saturday; the finish closes at 10 a.m. Sunday · WSER 2027 qualifier (sub-25:00)
Jeju60K
- Distance
- 60 km (37 mi)
- Vert gain
- 1,400 m (4,600 ft)
- Start
- Oct 3, 8:00 AM GMT+9
- Cutoff
- 15 hr
Starts from Gasiri at 8 a.m. Saturday; the finish closes at 11 p.m.
| Distance | Vert gain | Start | Cutoff | Notes |
|---|---|---|---|---|
| 148 km (92 mi) | 5,000 m (16,400 ft) | 9:00 PM GMT+9 | 37 hr | Starts from the Jeju World Cup Stadium at 9 p.m. Friday; the finish closes at 10 a.m. Sunday · WSER 2027 qualifier (sub-37:00) |
| 104 km (65 mi) | 4,000 m (13,100 ft) | Oct 35:00 AM GMT+9 | 29 hr | Starts from the Jeju World Cup Stadium at 5 a.m. Saturday; the finish closes at 10 a.m. Sunday · WSER 2027 qualifier (sub-25:00) |
| 60 km (37 mi) | 1,400 m (4,600 ft) | Oct 38:00 AM GMT+9 | 15 hr | Starts from Gasiri at 8 a.m. Saturday; the finish closes at 11 p.m. |
About
TransJeju by UTMB runs across Jeju Island, off the south coast of South Korea, in October. The Jeju100M leaves the Jeju World Cup Stadium at 9 p.m. on the Friday and covers 148 km with 5,000 m of climbing on a 37-hour limit. The Jeju100K starts from the same stadium at 5 a.m. on the Saturday, over 104 km, and the Jeju60K goes from Gasiri at 8 a.m. that morning.
Entry is first come, first served on the race's own site, and every ultra needs a valid UTMB Index at a set level. The 2026 window opened in March and closed at the end of July. A Jeju100M finish inside 37 hours, or a Jeju100K finish inside 25, counts as a Western States 100 qualifier.
Course
The 100M starts from the Jeju World Cup Stadium at 9 p.m. Friday and the 100K from the same stadium at 5 a.m. Saturday; both close at 10 a.m. Sunday, on limits of 37 and 29 hours. The 60K starts from Gasiri at 8 a.m. Saturday and closes at 11 p.m. The 2025 edition ran two weeks later in October, with a 62.7 km race where the 60K now sits.
How to register
First come, first served on the race's site, with a UTMB Index requirement on each ultra: a 100K index for the 100M, a 50K index for the 100K and a 20K index for the 60K. The 2026 window ran from March 18 to July 31, and there is no entry on race day.
Results by year
- 2026October 2, 2026 · completedJeju100M: Minchul Ko 16:27:13; Jeju100K: Ruqin Wang 10:11:33 · Lingjie Chi 12:15:06; Jeju60K: Yoshiki Hoshino 5:03:23 · Kaili Fan 5:30:34
- 2025October 17, 2025 · completedJeju100M: Minchul Ko 16:55:51 · Arika Ito 21:28:03; Jeju100K: Jianjian Yang 10:10:51 · Leslie Nowicki 13:02:58; Jeju70K: Peng Tian 5:02:46 · Aurore Dacier 5:44:07