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Marathons in South Korea

20 upcoming marathons in South Korea across 2 cities. Next: Saemangeum Gunsan International Marathon on April 4, 2027.

20marathons upcoming
2cities
April 4, 2027Next race
5distance types

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Hosting a marathon in South Korea? Submit the official source so runners can verify the race before they register.

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Already listed in South Korea? Open the race and use Update listing. Missing event? Start here with the location prefilled.

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14JUN
42.2K course — Jeju, South Korea
Jeju International Tourism Marathon Festival
Jeju, South Korea
June 14, 2026 Certified
14JUN
21.1K course — South Korea
Untangodo Skyrace - 20K
South Korea
June 14, 2026 JUN
21JUN
42.2K course — South Korea
Wonju Mountain Race - 35K
South Korea
June 21, 2026 JUN
12JUL
42.2K course — South Korea
UiiT - 41K
South Korea
July 12, 2026 JUL
15AUG
42.2K course — South Korea
High1 Skyrace
South Korea
August 15, 2026 AUG
15AUG
42.2K course — South Korea
Jangsu Night Trail - 37K
South Korea
August 15, 2026 AUG
17SEP
ULTRA course — South Korea
Korea Trans 308K - 312K
South Korea
September 17, 2026 SEP
18SEP
42.2K course — South Korea
Chuncheon Marathon
South Korea
September 18, 2026 SEP
02OCT
ULTRA course — South Korea
TransJeju by UTMB®
South Korea
October 2, 2026 OCT
17OCT
42.2K course — South Korea
Gyeongju Marathon
South Korea
October 17, 2026 Certified
19OCT
ULTRA course — South Korea
Séoul International Ultra Trail Running Race
South Korea
October 19, 2026 OCT
27OCT
ULTRA course — South Korea
High Trail Nine Peaks
South Korea
October 27, 2026 OCT
30OCT
ULTRA course — South Korea
Ulju Trail Nine Peaks - 96K
South Korea
October 30, 2026 OCT
31OCT
42.2K course — South Korea
Ulju Trail Nine Peaks - 44K
South Korea
October 31, 2026 OCT
01NOV
42.2K course — Seoul, South Korea
JTBC Seoul Marathon
Seoul, South Korea
November 1, 2026 BQ Qualifier
22NOV
21.1K course — South Korea
Seoul Half Marathon
South Korea
November 22, 2026 NOV
21FEB
42.2K course — South Korea
Daegu Marathon
South Korea
February 21, 2027 FEB
14MAR
42.2K course — South Korea
Seoul Marathon
South Korea
March 14, 2027 MAR
21MAR
42.2K course — South Korea
Seoul Marathon
South Korea
March 21, 2027 Certified
04APR
42.2K course — South Korea
Saemangeum Gunsan International Marathon
South Korea
April 4, 2027 APR

Regions

Place Marathons
Jeju 1
Seoul 1

Cities

Place Marathons
Jeju 1
Seoul 1

Planning notes for South Korea

Use this country page to shortlist 20 upcoming races by date, distance, registration path, and official source.

  • Next raceSaemangeum Gunsan International Marathon on April 4, 2027
  • Busy monthsOctober (6), June (3), August (2)
  • DistancesMarathon, Half marathon, Ultra, 10K, 5K
  • VerifyOpen each race page, then confirm details from its official, registration, course-map, or source link.

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