Llanberis Pass
A4086Gwynedd to Dinorwig · Wales
Distance5.6mi · 9.0 km
Drive time12 minon the road
DifficultyDemanding
Mountain
A rugged cleft beneath Snowdon's highest crags, strewn with boulders and history.
The A4086 falls from Pen-y-Pass down the Llanberis Pass, hemmed by the dark cliffs of Snowdon and Glyder Fawr and scattered with climbers' boulders. It is short, steep and visually overwhelming, but also one of Eryri's busiest roads, walkers, parked cars and coaches share every bend. Treat it as a place to look up rather than to hurry, and park only in the proper car parks.
Where it runs
GwyneddStart · Wales
DinorwigEnd · United Kingdom
Character
Corners18bends
Tightness7of 10
Max gradient12%≈ 1-in-8
Hairpins0tight bends
Climb122 mtotal ascent
Summit372 mhighest point · 1220 ft
SpringSummerAutumn
Elevation
272 m rangeKnow before you go
- Narrow with rock faces
- Heavy walker traffic and parked cars
- Loose stone after rain
Along the road
- parking Pen-y-Pass
Sources
In these collections
Nearby roads
The closest great drives to Llanberis Pass.





