South Korea trail race

TransJeju by UTMB

Fri, October 2, 2026 · Jeju Island, South Korea

A Korean island ultra around Jeju with volcanic terrain, Hallasan-area climbing, coastal humidity, and strong Asia-Pacific trail demand.

17 weeks to go Good timing for course research, travel planning, terrain-matched long runs, and a structured build.

Race Overview

TransJeju by UTMB is a trail race held on Fri, October 2, 2026 in Jeju Island, South Korea, South Korea. TrailSplits currently includes 4 mapped courses for this event, with course maps, elevation profiles, weather context, and pacing tools for the uploaded GPX data.

17 weeks to go

Race tools — Jeju 100M

Fri, October 2, 2026

17 weeks to go

Selected distance

Free training plan — Jeju 100M

Vert-focused blueprint with route-finder links into the Planner.

Jeju 100M plan 148 km · 5000 m D+

3D Trail Preview

Course map — Jeju 100M

Interactive MapLibre preview with the official GPX track.

Min Max

Elevation profile — Jeju 100M

Based on the official GPX track.

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Analyze this route in the Planner

Load the GPX directly into TrailSplits for surface analysis and terrain intel.