Shimonoseki Kaibiki Marathon

The Shimonoseki Kaikyo Marathon (下関海響マラソン) is one of Japan’s premier coastal marathons, held each autumn in the scenic port city of Shimonoseki. Renowned for its spectacular ocean views and challenging yet rewarding course, the race takes runners along the dramatic coastline overlooking the Kanmon Straits, where the islands of Honshu and Kyushu are separated by one of Japan’s busiest waterways. Participants enjoy panoramic views of the iconic Kanmon Bridge, rugged seaside cliffs, fishing villages, and the city’s vibrant waterfront, making it one of the country’s most memorable marathon experiences.

Unlike many fast, flat city marathons, the Shimonoseki Kaikyo Marathon is celebrated for its rolling hills and constantly changing scenery. The course rewards runners with breathtaking ocean vistas while providing a true endurance challenge that attracts both seasoned marathoners and runners seeking a uniquely Japanese destination race. Excellent local volunteer support, enthusiastic spectators, and outstanding organization have helped establish the event as one of western Japan’s signature road races.