Shonan International Marathon

Immerse yourself in the breathtaking beauty of Japan’s Shonan coast for the Shonan International Marathon. This unique race invites non-Japanese residents living in Japan and international participants to experience one of the world's most scenic marathon routes. The event starts and finishes in Oiso, a historic seaside resort town just an hour south of Tokyo by train.
Runners will be treated to stunning vistas as they traverse pristine beaches with Mt. Fuji towering majestically on the horizon. Alongside some of Japan’s premier tourist destinations like Kamakura and Hakone, participants can soak up centuries of history and culture while enjoying a challenging yet rewarding course.
What sets this marathon apart is its commitment to environmental sustainability. Shonan International Marathon was the first major race in the world to achieve zero waste from drink stations by encouraging runners to bring their own bottles or cups. In 2025, they reduced event waste by an impressive 76%, a feat that garnered overwhelming support and appreciation among participants.
With over 200 aid stations strategically placed along the route, this innovative approach not only ensures a clean course but also promotes eco-friendly practices within the running community. The Shonan International Marathon is more than just a race; it’s an experience where runners can cherish memories while contributing to a greener future.