TransJeju 100M (Jeju, Korea) 2026
Also known as: TransJeju by UTMB · Jeju100M
A night start from Jeju World Cup Stadium, linking the Yeongsil, Eorimok, Gwaneumsa and Seongpanak trailheads on the flanks of Hallasan, South Korea's highest mountain, then heading east to Gasiri and returning via forest trails and an oreum (volcanic cone) to the stadium.
The course tops out at 1,920 m (low point 59 m). There are 3 big climbs: 1,595 m around 0–24 km; 1,415 m around 39–49 km; 525 m around 106–122 km. About 50% of the distance is gentle (under 5% grade). In 2025, 79% of starters finished. The median finish was about 32 h, through 2 nights.
Predict your finish from your ITRA index
Enter your ITRA performance index to get your finish time, aid-station splits and cutoff margins from the results of 60 finishers of this race — the same model as the TRAIL STATUS app. Nothing is saved or sent.
The app adds predictions from your training log (Strava), race-day pacing and more. Free, no sign-up.
Predict in detail from my Strava trainingOverview
- Date
- Fri, 2 Oct 2026
- Start
- 21:00
- Location
- South Korea
- Distance
- 148 km
- Elevation gain
- 5,000 m
- Time limit
- 37h
- ITRA
- 100M
- Official website
- transjeju.utmb.world/races/Jeju100M
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 7.2 km | Healing Forest | 7.2 km | Day 1 22:401h 40m |
| 2 | 20.3 km | Yeongsil Entrance | 13.1 km | Day 2 02:405h 40m |
| 3 | 28.8 km | Eorimok Entrance | 8.5 km | Day 2 05:108h 10m |
| 4 | 40.9 km | Gwanumsa Entrance | 12.1 km | Day 2 07:1010h 10m |
| 5 | 58.7 km | Seongpanak Entrance | 17.8 km | Day 2 12:4015h 40m |
| 6 | 69 km | Red oreum | 10.3 km | Day 2 14:4017h 40m |
| 7 | 88.7 km | Gasiri | 19.7 km | Day 2 18:4021h 40m |
| 8 | 105.6 km | Meochewat Forest Trail | 16.9 km | Day 2 22:4025h 40m |
| 9 | 115 km | Eseungak Oreum | 9.4 km | Day 3 01:0028h |
| 10 | 126.8 km | Seogwipo Student cultural Center Camping site | 11.8 km | Day 3 04:0031h |
| 11 | 136.4 km | Healing Forest | 9.6 km | Day 3 07:0034h |
| F | 148 km | FinishJeju World-cup Stadium（FINISH） | 11.6 km | Day 3 10:0037h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2025 results
390 starters, 307 finishers (78.7% finish rate). Finish times of those who finished:
- Fastest
- 16h 56m
- Top 10%
- 25h 5m
- Top 25%
- 28h 10m
- Median
- 31h 38m
- Top 75%
- 34h 55m
- Top 90%
- 36h 23m
- Last finisher
- 36h 54m
"Top 25%" means one in four finishers had crossed the line by this time.
Years with a different course or different cutoffs are not directly comparable.
Other races
- TransJeju 100K (Jeju, Korea) 2026Sat, 3 Oct 2026 · South Korea · 104 km
- TransJeju 60K (Jeju, Korea) 2026Sat, 3 Oct 2026 · South Korea · 60 km
- TransJeju 20K (Jeju, Korea) 2026Sat, 3 Oct 2026 · South Korea · 20 km
- UTGD Skyrace 42 Sky Marathon 2026Sun, 14 Jun 2026 · South Korea · 42.2 km
- ULJU TRAIL NINE PEAKS 9 PEAKS 125K (Ulju, Korea) 2026Fri, 30 Oct 2026 · South Korea · 124.9 km
From your training log, TRAIL STATUS estimates your finish time, aid-station splits and cutoff margins for this race.
Predict my raceCompiled from each race's official information. Details can change, so always check the race's official website for the latest. Spotted a mistake? Please tell us through the contact form.
TRAIL STATUS · FAQ · Privacy policy