Start: Kilgobbin Lane Stepaside (O188 244) Barnacullia, Carty's Field, Ballyedmonduff forest Road, Ballybrack, Dublin Mountains Way, Tibradden, Glendoo, Knocknagun, Prince William's Seat, Glencullen Road, Fairy Castle, Three Rock, Barnacullia, Fernhill Tunnel (End at Start).