Jeju City, Jeju (South Korea) - "Jeju International Trailrun (Ultramarathon) 80km 60km". Jeju International Trail 80km, 60km and Ultramarathon (50km, 100km, 200km). The biggest Ultramarathon (trail run) in Korea. Date and time: at AM 4:00 on 24th of May, 2025. Starting place: Topdong park, Jeju City. Technical Meeting: PM 5:00 on 23th of March in Palace Hotel, Jeju City. In case of trail run and over 100km item, you need head lantern, aluminum sheet, wind jacket. Jeju Island is one of most beautiful islands. So, please participate in Jeju International Ultramarathon. www.kumf.kr