Pentyrch is eight miles north of Cardiff, high above the River Taff, on the side of Garth Mountain. The village can be reached either from junction 32 of the M4 Motorway, then A470, then via Heol Goch, a hill flanked by a quarry and nature reserve or from the A4119, Llantrisant Road via Cardiff Road, Creigiau then Heol Pant-y-Gored.

Pentyrch and the Village Hall are well signposted, the postcode is CF15 9QR.