Portsmouth Coastal Waterside Marathon Events | 50K Ultra

The Portsmouth Coastal Waterside Marathon offers a stunning, festive running experience along the scenic south coast. With three race options — a half marathon, full marathon, and 50km ultra — runners of all levels can take on this super flat, multi-terrain course. The route winds along the shores of Langstone Harbour, where the muddy yet magical landscape creates a unique coastal backdrop. Expect fully stocked aid stations, enthusiastic support, and awesome medals at the finish line. Whether you’re chasing a PB or embracing the festive spirit, this race is the perfect winter challenge in a breathtaking seaside setting.