第23回 OSAKAキャッスルマラソン 2026

The OSAKA Castle Marathon is a 42.2 km running race in Osaka Prefecture, Japan, held in July. The race starts and finishes in the Memorial Tree Forest within Osaka Castle Park, with its base in one of the city’s major public park areas instead of a road-only start line. This listing is for the 23rd edition. The details indicate a standard marathon setup: one full-distance race, a park start and finish, and advance entries handled through the event office, with registration closing before race day.