Hayling Billy Line - 10k The Ship Inn, Langstone Road, Langstone, Havant, PO9 1RD DIRECTIONS TO THE START POINT Running distance: 10 km About this run route Start / Finish The Ship Inn Car Park. Use sat nav post code PO9 1RD A coastal out and back route along the bed of an old railway line between Havant and Hayling Island with views over Langstone Harbour. Share this page Facebook Google Twitter Email