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Road cycling routes

Penrhyndeudraeth

Porthmadog Harbour – The Cob Causeway loop from Penrhyndeudraeth

Road cycling routes

Penrhyndeudraeth

Porthmadog Harbour – The Cob Causeway loop from Penrhyndeudraeth

Moderate

4

riders

Porthmadog Harbour – The Cob Causeway loop from Penrhyndeudraeth

01:23

25.8km

340m

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 accessible with public transport.

Last updated: August 20, 2026

Tips

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 16.3 km for 896 m

Waypoints

A

Start point

Train Station

1

5.53 km

Glaslyn Ospreys

Highlight • Viewpoint

A pair of ospreys have been breeding in the Glaslyn Valley since 2004. The RSPB operated the first observation center at Pont Croesor from 2005 until a group of local …

Translated by Google •

Tip by

2

6.37 km

Prenteg Climb

Highlight (Segment) • Viewpoint

Extremely hard climb, rising by an average of over 11% for over 2km. But it is worth the effort considering the wonderful views from the summit to Cnicht and beyond.

Translated by Google •

Tip by

3

19.2 km

Welsh Highland Heritage Railway Station

Highlight • Structure

4

20.2 km

Cariad Gelato

Highlight • Cafe

Awesome Italian style gelato made locally and sold in the shop in Porthmadog or from a cool little kiosk on the sea front in Criccieth. Loads of great flavours that …

Tip by

5

20.2 km

Porthmadog Harbour Town

Highlight • Viewpoint

Porthmadog is simply a busy hub, a gateway to the Llyn Peninsula and Snowdonia National Park. It is a lovely harbour town with a gorgeous mountain backdrop. It also has …

Tip by

6

20.5 km

Porthmadog Harbour

Highlight • Settlement

The marina is important to the city and remains a vibrant, vibrant center of activity. Porthmadog has an attractive harbor and attracts sailors and pleasure boaters from all over Europe …

Translated by Google •

Tip by

7

20.6 km

Porthmadog Harbour Railway Station

Highlight • Structure

The current stone buildings date from 1878/79 and replace earlier wooden buildings that had been dismantled and reused elsewhere on the railway. The goods shed was added in 1880. In …

Translated by Google •

Tip by

8

20.8 km

The Cob Causeway

Highlight (Segment) • Bridge

This mile-long causeway crosses River Glaslyn as it reaches the estuary. Opened in 1811, this causeway carries the Ffestiniog Railway as well as an A road and a cycle path. …

Tip by

B

25.8 km

End point

Train Station

Way Types & Surfaces

Way Types

15.7 km

5.43 km

1.95 km

1.82 km

896 m

< 100 m

Surfaces

17.2 km

7.57 km

896 m

140 m

< 100 m

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Elevation

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

Highest point (240 m)

Lowest point (0 m)

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Weather

Powered by Foreca

Today

Monday 26 October

16°C

8°C

76 %

Additional weather tips

There’s a fairly high chance of rain. Consider packing a waterproof jacket.

to get more detailed weather forecasts along your route

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