Lôn Las Ogwen
Lôn Las Ogwen is a cycle route in the National Cycle Network which runs south from the NCN 5 at Porth Penrhyn on the north coast of Wales to Llyn Ogwen in Snowdonia. Lôn Las is Welsh for "green lane".
From Porth Penrhyn to Penrhyn Quarry it follows the former Penrhyn Quarry Railway trackbed. After Tregarth the route climbs about to Ogwen Cottage.