Challenge Gunsan-Saemangeum

Race where Korea’s rich history meets the future along the world’s longest seawall

Race information

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.

5 reasons to race

Race at the place that marks the future of Korean history Enjoy the breathtaking Gogunsan Island District scenery from the bike course Race along the world’s longest sea wall - the Saemangeum Seawall at 33.9km long Easy access from all around with a warm local welcome and incredible hospitality Fast, smooth and scenic bike along a closed highway