Marathon Focus

Marathons in Seoul

Seoul is home to 2 marathons in our database in South Korea, centred on Seoul. Seoul International Marathon is the largest race in the lineup, typically drawing around 20,000 finishers, while the full spread offers everything from fast urban courses to scenic regional events. Browse the races below for course maps, elevation profiles, typical weather, and practical race-day detail to help you choose your next start line. Plan by month on our marathon calendar or filter by country and region.

Seoul Marathon
Seoul, Seoul, South Korea

Seoul Marathon

The Seoul Marathon is one of the world's largest marathons, drawing approximately 12k finishers each November on an urban road in Seoul, South Korea. It is a separate mass-participation autumn race from the spring Seoul International Marathon (https://www.marathonfocus.com/marathons/south-korea/seoul-international-marathon). The route passes Han River sections, central boulevards, and skyline-heavy roads through the capital. Han River sections, central boulevards, and skyline-heavy capital roads carry this separate autumn mass race through Seoul on a largely runnable profile.

Next race: Sunday, 1 November 2026

Nearby Marathons

Other races closest to Seoul.

Gongju Baekje Marathon
Gongju, South Chungcheong, South Korea· 124 km away

Gongju Baekje Marathon

The Gongju Baekje Marathon draws approximately 4,000 finishers each October on a historic city road in Gongju, South Korea. The ancient-kingdom history gives the race a distinct cultural frame within Korean road running. The route passes Baekje-era heritage areas, river sections, and roads through the old capital. Baekje-era heritage areas and river sections climb through the old capital, where ancient-kingdom history frames every rolling stretch of road.

Next race: Sunday, 4 October 2026