All races
Trail run

TransJeju by UTMB

TransJeju by UTMB took place on Fri, Oct 2, 2026 in Jeju City, South Korea. The main route is 160 km.

This race has already taken place. See upcoming races

Date
Fri, Oct 2, 2026
Start
Jeju City 🇰🇷
Distance
160 km
Level
Open to all

Got a race in mind?

Use IntervalCoach to train for your next event, an AI coach that builds your plan and adapts it every day.

Start free

TransJeju by UTMB is the biggest ultra distance trail event on the volcanic island Jeju, South Korea, taking runners through Hallasan National Park.

What this race demands

TransJeju by UTMB requires runners to cover 160 kilometers across the volcanic terrain of Jeju Island and Hallasan National Park. Athletes must manage extreme ultra-distance fatigue and prolonged time on feet over varied volcanic trails.

Ultra Distance Endurance

Covering 160 kilometers requires exceptional aerobic capacity, pacing discipline, and resistance to muscular breakdown.

Technical Terrain Management

Traversing the volcanic terrain of Hallasan National Park places high demands on ankle stability, eccentric leg strength, and focus throughout extended hours of movement.

Given the ultra-distance duration exceeding multiple hours, athletes should target an intake of 60 to 90 grams of carbohydrates per hour to maintain energy availability and gastric stability.

Frequently asked questions

When is TransJeju by UTMB?

TransJeju by UTMB took place on Fri, Oct 2, 2026 in Jeju City, South Korea.

How long is TransJeju by UTMB?

The main route is 160 km.

What does TransJeju by UTMB demand?

TransJeju by UTMB requires runners to cover 160 kilometers across the volcanic terrain of Jeju Island and Hallasan National Park. Athletes must manage extreme ultra-distance fatigue and prolonged time on feet over varied volcanic trails.

Who is TransJeju by UTMB for?

TransJeju by UTMB is open to all participants.

Similar races

Organising this race?