Shinjuku City Half Marathon

The Shinjuku City Half Marathon is an annual road running event held in Shinjuku, Tokyo, Japan, typically in late January with the start and finish at the National Stadium and a course that passes through iconic city streets and around Jingu Gaien. It features an officially certified half-marathon distance alongside shorter fun and community races, making it both a competitive and inclusive event for runners of all levels. The race is organized by the Shinjuku City Half Marathon & Citizens’ Health Marathon Executive Committee, with support from organizations including Shinjuku Ward, the Tokyo Athletics Association, and related local groups.