Past event

Challenge Gunsan-Saemangeum

Name: Challenge Gunsan-Saemangeum
Start: 2026-07-12T07:00:00+00:00
End: 2026-07-12T14:00:00+00:00
Location: Gunsan, Jeollabuk-do, South Korea

Registration Open

Event

Gunsan, Jeollabuk-do, South Korea

12/07/26 7:00 AM - 2:00 PM

Race Distances

Middle 113km

Swim 1.9km · Bike 90km · Run 21.1km

Course & conditions

SwimSea

BikeRolling

RunFlat

High air25°C / 77°F

Low air23°C / 73°F

Water22°C / 72°F

Challenge Gunsan–Saemangeum delivers a truly unique race experience on South Korea’s west coast. The event showcases a fast, scenic course through the Saemangeum Seawall, the world’s longest, offering athletes wide-open roads and uninterrupted views of the Yellow Sea. With calm swim conditions, a flat and aerodynamic bike, and a well-supported run, it’s ideal for both first-time long-distance athletes and seasoned competitors. Exceptional organisation, warm Korean hospitality, and a growing international atmosphere make this race a standout on the Challenge Family calendar.