よこすかシーサイドマラソン

よこすかシーサイドマラソン (Yokosuka Seaside Marathon) takes place in Yokosuka, Kanagawa Prefecture, on 22 November 2026, with a half marathon, a 10 km, a 3 km and a 1.8 km Family Run. Popular with runners for its flat, fast course along the city's Pacific coastline, the out-and-back route offers panoramic ocean views and features a signature turnaround point near Kannonzaki Park.

Half marathon runners can test their endurance on an additional stretch of scenic rolling hills, making the event an ideal choice for athletes looking for a rewarding race in a stunning seaside setting. The half marathon starts at 8.45am, followed by the 10 km at 9.30am, the 3 km at 10.10am and the Family Run at 10.55am.