Kosai Relay Marathon 2027 (KOSAIリレーマラソン2027)

Experience an inviting and community-focused race at Lake West Sports Park on January 17, 2027. This unique event challenges participants to form teams of friends, colleagues, or family members and see how many laps they can complete around a scenic course that measures approximately 1.5 kilometers per loop within a three-hour time frame.
The atmosphere is warm and supportive as runners enjoy the park's natural beauty while pushing their limits in a friendly competition. Whether you're running with your workmates to kick off the new year or bringing along children for an exciting family outing, this event offers something special for everyone involved.
Entry fees are set at 2,500 yen per person for general and mixed-gender categories (for residents of the city) and 3,000 yen for non-residents. For younger participants in middle school or elementary school, the entry fee is a more affordable 1,000 yen each.
Join us at Lake West Sports Park to celebrate teamwork and personal achievement as you explore this charming course together with your group.