Days Tywyn to Llangelynin Llangelynin to Barmouth Barmouth to Tal y Bont Tal y Bont to Harlech Harlech to Llandecwyn Llandecwyn to Porthmadog Porthmadog to Cricieth Chwilog to Pwhelli Pwllheli to Llanengan Llanengan to Aberdaron Aberdaron to Mynydd Mawr -Circular Route Day Description Distance Time Climb Descent 1. Tywyn to Llangelynin 15.3 km 4:10 h 318 m 280 m 2. Llangelynin to Barmouth 17.8 km 5:18 h 524 m 590 m 3.