This challenging climb in the Snowdonia National Park passes between the mountain ranges of the Glyderau and the Snowdon massif. The ride starts from the car park at Nant Peris and follows the A4086 to Pen-y-Pass. It's about a 3 mile ride (6 miles return journey) with stunning views and a high point of about 1180ft (359 metres). At Pen-y-Pass you can enjoy refreshment at the cafe before turning round and descending back to Nant Peris.
You can follow the route by using the google street view link below. It'll give you a good idea of the climbing involved and the scenery you can enjoy on the route.