Races
Transjeju
One hundred fifty kilometers around Jeju. Two days of volcanic oreums and coastal trail.
- Start1,906 ft
- High2,107 ft
- Low1,457 ft
- Finish1,673 ft
Geometryderived
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. +7,352 ft gain and -7,585 ft loss. Surfaces skew 70% trail / 25% oreum path / 5% road. Second loop of oreum climbs with sleep debt and island wind. High point near 2,107 ft. Low near 1,457 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 7,352 feet of 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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