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Explore/United Kingdom/GB WLS/Llanberis Pass A4086 — Heart of Snowdonia
GBLlanberis, United KingdomModeratePaved

Llanberis Pass A4086 — Heart ofSnowdonia.

Distance
12 km
Duration
1 day
Climb
320 m
Rating
4.7 / 5
198 reviews
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Curated by Rider · Updated Jul 2026
Overview /01Day-by-day /02Reviews /03Open in app →
Overview

Llanberis Pass A4086 — Heart of Snowdonia.

The most dramatic mountain road in Wales, cutting through the jaws of the Llanberis Pass in Snowdonia National Park. Flanked by sheer slate cliffs and the Glyderau and Snowdon massifs, this short but intense 12km road climbs through one of Britain's most impressive glacial valleys to the 359m Pen-y-Pass summit.

Quick facts

SurfacePaved
Distance12 km
Days1
Total climb320 m
DifficultyModerate
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Day-by-day

The route.

ROUTE
4 stops
Start
Llanberis VillageStart · Start in Llanberis beneath Snowdon. Slate museum and Snowdon Mountain Railway are here.
Scenic
Llanberis Pass — Slate CliffsScenic Point · The pass narrows dramatically with Dinas Cromlech crag on the left — world-famous rock climbing routes on these walls.
Pass
Pen-y-Pass Summit — 359mMountain Pass · The col between Snowdon and the Glyderau. Walkers' car park at the top. View back down the pass is superb.
End
Capel CurigEnd · End at Capel Curig — a small climbing and walking village. The Plas y Brenin outdoor centre is here. Continue on the A5 to Betws-y-Coed for a full Snowdonia loop.
Reviews

From riders.

198 verified rides logged on this route.
4.7/ 5
★ ★ ★ ★ ★
198 verified rides

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