Trail RunningUTMB Index RacesUTMB World Series

TransJeju by UTMB

Trail Running covering 20 km to 148 km with up to 5,000 m D+ in Jeju City (Jeju Province, South Korea)

LocationJeju, Jeju Province, South KoreaShow on map(33.5097° N, 126.5219° E)
Date & StatusOctober 1, 2027 to October 2, 2027Date confirmed
Elevation gainUp to +5,000 m

TransJeju by UTMB is an endurance sporting event in Jeju, Jeju Province, KR focused on Trail Running. It is part of UTMB Index Races, UTMB World Series. Key features include Nature & Off-Road, Mountain, Island, Forest.

The race program comprises 4 competitions, including Jeju100M (148 km, +5,000 m D+), Jeju100K (104 km, +4,000 m D+), Jeju70K (60 km, +1,400 m D+), and Jeju20K (20 km, +508 m D+). The next edition is officially confirmed from October 1, 2027 to October 2, 2027. Official race regulations, course details, and registration information are provided on the organizer's website (transjeju.com).

Official website
TransJeju by UTMB in Jeju (Work: "Mount Fuji from Lake Yamanaka 1994-12-10", Photo: Alpsdake, License: CC0 1.0, Source: Wikimedia Commons)
"Mount Fuji from Lake Yamanaka 1994-12-10" · Photo: Alpsdake · Wikimedia CommonsCC0 1.0
Cropped to 16:9 (960 × 540 px), WebP

Event characteristics

Nature & Off-RoadMountainIslandForestHigh AltitudeMulti-Day

Races & distances (4)

CompetitionDisciplineDistanceElevation gainAltitude rangeCourse typeCourse & profile
Jeju100MTrail Running148 km+5,000 m8 m - 2,108 mLoop courseRoute & profile
Jeju100KTrail Running104 km+4,000 m11 m - 1,691 mLoop courseRoute & profile
Jeju70KTrail Running60 km+1,400 m14 m - 602 mLoop courseRoute & profile
Jeju20KTrail Running20 km+508 m17 m - 230 mLoop courseRoute & profile
Course & Elevation Telemetry

Course route & map

Distance
148 km
Elevation gain
+5,000 m D+
Elevation loss
-5,000 m D-
Altitude range
8 m - 2,108 m
Gradient (Avg / Max)
6.8 % / 12.2 %
Course format
Loop course
148 km+5,000 m D+
Start (S)Finish (F)
N20406080100120140FS33.5097° N, 126.5219° E

Elevation profile & course telemetry

Altitude from 8 m to 2,108 m above sea level (+5,000 m D+, -5,000 m D-)

Peak: 2,108 m·at 102.6 km·Ø 6.8 %
8 m708 m1,408 m2,108 m0 km29.6 km59.2 km88.8 km118.4 km148 km2,108 m
Event Information & Answers

Frequently asked questions (FAQ)

When and where does TransJeju by UTMB take place?

TransJeju by UTMB takes place in Jeju, Jeju Province, KR (start area at coordinates 33.5097° N, 126.5219° E). The next edition is officially confirmed from October 1, 2027 to October 2, 2027.

What races and distances are offered at TransJeju by UTMB?

The race program comprises 4 competitions, including Jeju100M (148 km, +5,000 m D+), Jeju100K (104 km, +4,000 m D+), Jeju70K (60 km, +1,400 m D+), and Jeju20K (20 km, +508 m D+). The competitions belong to Trail Running.

What is the course layout and elevation profile for TransJeju by UTMB?

The main competition (Jeju100M over 148 km) is designed as a loop course featuring +5,000 m of elevation gain and -5,000 m of elevation loss, ranging between 8 m and 2,108 m above sea level. An interactive course map with route visualization, elevation profile, and GPX export is available in the course section on this page.

Where can I find registration and official race rules for TransJeju by UTMB?

Official race regulations, course details, and registration information are provided on the organizer's website (transjeju.com).