Setting off from Capel Curig through trees and with views of the lakes of Llynnau Mymbyr and in the distance imposing mountains. The road runs alongside the water for a mile or so before reaching a wonderful section of road with curves and elevation changes. Turn right and stay on the A4086 heading and up onto the Llanberis Pass.
Climbing, the road quickly tightens and provides some stunning scenery. Dropping down the other side you descend towards Llanberis. Heading down along the stream, watch out for rock on the road, you reach Nant Peris, and then 2 miles further on Llanberis. The road continues on to Caernarfon via Clanrug.