Sure Guernsey Marathon

Sure Guernsey Marathon is a spring island marathon based in St Peter Port, Guernsey, with a clockwise coastal course that showcases country lanes, shoreline views, and many of the island’s landmarks. Organized by the Guernsey Marathon Committee and 3D Events, and supported by title sponsor Sure, the event combines a full marathon with the Mourant Relay Race and The Mile, giving the weekend a broader festival feel than a standard standalone marathon. For runners looking for a destination race with strong scenery, local character, and a distinctly island atmosphere, Guernsey stands out as one of the more unusual and memorable marathon options in the region.