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Llanberis Pass – Pen-y-Pass loop from Cwm Dyli Power Station

Llanberis Pass – Pen-y-Pass loop from Cwm Dyli Power Station

Moderate

106

riders

Llanberis Pass – Pen-y-Pass loop from Cwm Dyli Power Station

01:08

20.7km

410m

Road cycling

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride. The starting point of the route is right next to a parking lot.

Last updated: February 27, 2026

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The surface for a segment of your route may not be suitable

Some segments of your route comprise a surface that may not be suitable for your chosen sport.

After 4.99 km for 206 m

Waypoints

Start point

Parking

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1.84 km

Mallory's Café

Highlight • Cafe

Iconic Pen y Pass is the access point to both the Miners’ and Pyg Track trailheads leading to Yr Wyddfa’s summit. At the pass are toilets, a café, and a …

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4.11 km

Cromlech Boulders

Highlight • Climb

Right opposite the layby are the two main blocks - a good description and link to the topo is at climber.co.uk/outdoor/bouldering/around-the-bloc-the-cromlech-boulders-llanberis

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5.08 km

Nant Peris valley is a picturesque and enchanting valley located in Snowdonia National Park, Wales. Surrounded by towering mountains and lush greenery, it offers breathtaking natural beauty and a tranquil …

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10.3 km

Llanberis Village and Llyn Padarn

Highlight • Settlement

Llanberis is synonymous with Yr Wyddfa (Snowdon). It's a popular starting point for some of the easier ways to the roof of Wales. Whether it’s via the Llanberis Path or …

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10.4 km

Llanberis Lake Railway

Highlight • Structure

Not been on this myself but on a conversation with a member of the public I'm told it's a wonderful journey around to the north side of the lake away from the hustle and bustle of the South side

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13.7 km

Llanberis Pass

Highlight • Mountain Pass

The Llanberis Pass is a spectacular road climb in Snowdonia National Park, Gwynedd. It is the pass between Glyderau and Snowdon Massif at 359 metres above sea level. It also …

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13.9 km

Llanberis Pass – Pen-y-Pass Climb

Highlight (Segment) • Climb

Awesome mountain road from Nant Peris in the west to the top of Pen-y-pass in the east. It's a long climb up from Nant Peris or an exciting descent in …

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18.9 km

Pen-y-Pass

Highlight • Parking

Right in the heart of northern Eryri (Snowdonia), Pen-y-Pass is superbly located for adventures on the Yr Wyddfa (Snowdon) massif and the Glyderau. It is a popular starting point for …

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20.7 km

End point

Parking

Way Types & Surfaces

Way Types

20.3 km

241 m

< 100 m

Surfaces

20.4 km

241 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (360 m)

Lowest point (110 m)

Weather

Thursday 7 May

13°C

3°C

32 %

Additional weather tips

Max wind speed: 20.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Llanberis Pass – Pen-y-Pass loop from Cwm Dyli Power Station

Mallory's Café

Cromlech Boulders

Nant Peris Valley

Llanberis Village and Llyn Padarn

Llanberis Lake Railway

Llanberis Pass

Llanberis Pass – Pen-y-Pass Climb

Pen-y-Pass

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