From Haverfordwest: take the A487 to St Davids, at the entrance to St Davids, turn left at Oriel y Parc/St Davids visitor centre. 'Caerfai' is sign posted.

Alternative route: avoiding the hills at Newgale and Solva, take the A40 to Letterston, then B4331 to join the Fishguard Road to St Davids A487 near Mathry.

From Fishguard: take the A487 to St Davids, once in the city, turn left at Barclays Bank, up the High Street and past the Grove Hotel, turn at Oriel y Parc/Visitor Centre. 'Caerfai' is sign posted.