A 400m sea swim will test for those that are looking to gain every second, before a 5 kilometre run twisting turning 2 lap circuit around the grassy knoll, between the Dukes mound beach and the marina directly opposite the regency Sussex Square. The circuit keeps everyone in eyeshot of their quarry and allows friends and family to track the progress of their loved ones, or gaze out to sea should the tension prove too much.