Porth Penrhyn – Porth Penrhyn Harbour loop from Bangor

Hiking trails & Routes

Porth Penrhyn – Porth Penrhyn Harbour loop from Bangor

Moderate

5.0

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hikers

Porth Penrhyn – Porth Penrhyn Harbour loop from Bangor

02:33

9.52km

110m

Hiking

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: August 2, 2026

Waypoints

Start point

Bus stop

Get Directions

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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690 m

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 dockside as well as lovely views across the water.

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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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6.72 km

Ford Crossing with Footbridge

Highlight • Bridge

The ford can be crossed using the footbridge. The road leading down to the ford from the old rail bridge side is steep. There is also access to a cycle path that runs alongside the river.

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7.50 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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9.52 km

End point

Bus stop

Way Types & Surfaces

Way Types