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TransJeju by UTMB Seogwipo-si, Jeju, South Korea

Name: TransJeju by UTMB
Start: 2027-09-24
End: 2027-09-25

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TransJeju by UTMB

Course maps

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HelloDrifter does not warrant the accuracy of this course data; it is provided for informational use only. Verify the course against the event organizer's published materials before relying on it for navigation or safety-critical activities.

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Jeju20K
Jeju60K
Jeju100K
Jeju100M

Foot race | 24 Sep 2027

92.1 mi

Distance

Elevation gain

6,253 ft

Elevation high

1,955 ft

Elevation avg

Unspecified surface

Elevation loss

203 ft

Elevation low

19%

Climb factor

What is climb factor?

The climb factor for a course is the percentage of your energy used in hill-climbing compared to the energy expended running the flats.

This course has a climb factor of 19% over 92.1 mi, which means that the energy expenditure for the run is equivalent to running a flat 109.6 mi.

Climb factor is provided courtesy of Ben Crowell, who both authored climb factor's scientific paper and wrote the open source software for it. You can read more about it here .

Course last updated 10 Oct 2026

All values approximate

Distance & elevation data

The distance or elevation data not precisely what you expect for this route?

Data from a GPS device can be rough, especially in areas where the terrain (trees, canyons) interfere with GPS signals. And routes drawn on our maps are reliant on people marking trails from satellite images -- the details of which can be hidden by trees.

Elevation can be tricky too. Elevation data is stored on spaced topographical lines, and determining the elevation of a point requires computers to estimate based on how close the point is to the topographical line.

We mitigate this by calculating distance in 3-D (think Pythagorean theorem) and using mathematical techiniques to smooth the elevation data. We come close, but no one can be perfect with imperfect data, even in 2026.

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Stats summary

Race distance	Distance	Ele gain	Ele loss	Ele avg	Paved	Gravel	Dirt	Narrow
Jeju20K	12.1 mi	1,496 ft	1,490 ft	958 ft	100%	0%	0%	0%
Jeju60K	38.3 mi	4,859 ft	5,486 ft	1,332 ft	100%	0%	0%	0%
Jeju100K	64.1 mi	13,789 ft	13,786 ft	2,379 ft	100%	0%	0%	0%
Jeju100M	92.1 mi	16,699 ft	16,696 ft	1,955 ft	100%	0%	0%	0%