Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: October 15, 2025

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Waypoints

Start point

Bus stop

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543 m

Porth Penrhyn

Highlight • Viewpoint

Here you cross the mouth of the Cegin River into the Menai Strait. Here is Port Penrhyn, once a vital port for the export of slate from the Penrhyn Quarry, …

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664 m

Porth Penrhyn Harbour

Highlight • Structure

Just outside of Bangor, Porth Penrhyn is a pretty harbour on the edge of the Menai Strait. You'll find fishing boats and coastal freight ships moored up here along the …

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937 m

Cegin Viaduct

Highlight • Bridge

The path from the harbor towards Penrhyn Castle and on to Bethesda is a former railway bed, originally built specifically for the transport of slate from the local quarries. This …

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2.44 km

Holyhead–Bangor Railway Viaduct

Highlight • Bridge

Railway viaduct on the Holyhead (on Anglessey) - Bangor - Conwy line

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7.51 km

Afon Cegin

Lake

8.85 km

Slate Industry Bench – Start of the Snowdonia Slate Trail

Highlight • Monument

A bench on the chassis of a railway wagon for transporting slate, featuring scenes from the slate industry, serves as the official starting point of the Snowdonia Slate Trail (at …

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9.53 km

End point

Bus stop

Way Types & Surfaces

Way Types

6.07 km

2.46 km

783 m

193 m

< 100 m

Surfaces

9.20 km

148 m

135 m

Elevation

Weather

Today

Thursday 18 December

11°C

7°C

94 %

Additional weather tips

Max wind speed: 32.0 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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Porth Penrhyn

Porth Penrhyn Harbour

Cegin Viaduct

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Slate Industry Bench – Start of the Snowdonia Slate Trail

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