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United Kingdom
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North Wales
Gwynedd
Llanberis

Pen-y-Pass – Yr Wyddfa (Snowdon) Summit loop from Nant Peris

Routes
Running trails & routes
United Kingdom
Wales
North Wales
Gwynedd
Llanberis

Pen-y-Pass – Yr Wyddfa (Snowdon) Summit loop from Nant Peris

Expert

5.0

(1)

178

runners

Pen-y-Pass – Yr Wyddfa (Snowdon) Summit loop from Nant Peris

03:18

21.4km

970m

Expert run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required. The starting point of the route is right next to a parking lot.

Last updated: October 15, 2025

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Waypoints

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Start point

Parking

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1

2.49 km

Pen-y-Pass

Highlight • Trail

Pen-y-Pass is the start point for the Pyg Track, Miners Track and Crib Goch routes up Yr Wyddfa (Snowdon). It's also the start of the Snowdon Horseshoe fell running route …

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2

6.78 km

The Zigzags – Pyg and Miners Tracks

Highlight (Segment) • Trail

The top section of the Pyg & Miners Tracks up Yr Wyddfa (Snowdon) is known as the zigzags. The path gets steeper and rockier as it climbs this section. It's …

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3

7.85 km

Yr Wyddfa (Snowdon) Summit

Highlight • Natural Monument

The highest point in Wales – and higher than any peak in England – Yr Wyddfa (Snowdon) stands at 3,560 feet (1,085 m). It can get very crowded at popular …

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4

8.43 km

Bwlch Glas Finger Stone

Highlight • Trail

The finger stone at Bwlch Glas marks the point at which the Pyg and Miners' Tracks reach the summit ridge and join the Crib Goch, Ranger and Llanberis Paths. Particularly helpful in poor visibility.

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5

8.47 km

View of the Pyg Track and Lakes in Snowdonia National Park

Highlight • Trail

UTS 50 amazing ultra trail race stunning views over the mountains

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6

11.8 km

Llanberis Path

Highlight • Trail

The most popular trail up Snowdon for a good reason. It starts in Llanberis and is well maintained and a good gradient for a challenging ascent or long descent. It's …

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B

21.4 km

End point

Parking

Way Types & Surfaces

Way Types

10.2 km

4.75 km

3.89 km

1.13 km

934 m

433 m

< 100 m

Surfaces

13.6 km

4.88 km

1.03 km

799 m

433 m

322 m

300 m

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Elevation

Elevation

Highest point (1,040 m)

Lowest point (110 m)

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Monday 3 November

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How to understand each route’s difficulty level

Hiking

Bike

Mountain Bike

Road Bike

Running

Easy
Up to 2 hours and 1,000 ft. of elevation gain. Great for any fitness level.Easily-accessible paths. Suitable for all skill levels.
Corresponds approx.to SAC 1.
Intermediate
Up to 5 hours and 3,000 ft. of elevation gain. Requires good fitness.Mostly accessible paths. Sure-footedness required.
Corresponds approx. to SAC 2-3.
Expert
More than 5 hours long or 3000 ft. of elevation gain. Requires very good fitness.Sure-footedness, sturdy shoes and alpine experience required.
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Technical difficulty rating based on the Swiss Alpine Club (SAC) Hiking Scale.
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