Races
Transjeju
One hundred fifty kilometers around Jeju. Two days of volcanic oreums and coastal trail.
- Start1,906 ft
- High2,125 ft
- Low1,437 ft
- Finish1,673 ft
- Jeju Island at mile 0.0
- Transjeju mile 19 at mile 19, cutoff 7.4 hours
- Transjeju mile 37 at mile 37, cutoff 14.8 hours
- Transjeju mile 56 at mile 56, cutoff 22.2 hours
- Transjeju mile 74 at mile 74, cutoff 29.6 hours
- Finish South Korea at mile 93, cutoff 37 hours
Geometrycourse math
The cruxSecond loop of oreum climbs with sleep debt and island wind (near mile 61)
Course DNA
The Course
Transjeju runs 150 km through Jeju Island, South Korea. Surfaces skew 70% trail / 25% oreum path / 5% road. Second loop of oreum climbs with sleep debt and island wind. High point near 2,129 ft. Low near 1,434 ft. October temps run 45°F to 75°F. The course rewards patience early and punishes rushed descents after mile 47.
The Work
Train for the climbing across 150 km. Back-to-back long runs on trail. Practice power-hiking grades above 15 percent. 37 hours total means limited margin: rehearse fueling every 45 to 60 minutes and downhill eccentric work weekly. Technicality 5/10. Build a block that simulates the crux near mile 61.
Kit
October in Jeju Island, South Korea: plan for 45°F to 75°F. Mandatory shell if rain is in forecast. Headlamp with spare batteries if 37 hours pushes past dark. Poles help on sustained climbs above mile 23. Vest capacity for 2 liters minimum. Shoes matched to 70% trail: lugs for mud, rock plate if the course turns technical after mile 47.
Race Day
Hold effort through mile 23. The field often splits on the first big climb after mile 47. Second loop of oreum climbs with sleep debt and island wind near mile 61 is where time is won or lost. Walk the steep pinches. Run the flats and gentle downhills. Crew at major aids: socks, calories, ice if hot. Transitions under 5 minutes when possible. Final third is 31 miles of fatigue management. Finish with reserve for the last descent.
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