The Chuncheon International Marathon is an annual marathon race which is held in late October in the city of Chuncheon, South Korea. First held in 1946, it is the second oldest marathon in the country after the Seoul International Marathon. Sponsored by The Chosun Ilbo, a major daily newspaper in South Korea, the race is one of two in the country which holds IAAF Silver Label status, along with Gyeongju International Marathon.

Chuncheon, formerly romanized as Ch'unch'ŏn, is the capital of Gangwon Province in South Korea. The city lies in the north of the county, located in a basin formed by the Soyang River and Han River. There are some large lakes around the city, most notably Soyang Lake and Uiam Lake. The area has small river islands, such as Sangjungdo, Ha-Jungdo, Bungeodo, and Wido.