Routes

Planner

Features

Updates

App

Get the App

Porthmadog Harbour – The Cob Causeway loop from Penrhyndeudraeth

Porthmadog Harbour – The Cob Causeway loop from Penrhyndeudraeth

Moderate

riders

Porthmadog Harbour – The Cob Causeway loop from Penrhyndeudraeth

01:24

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: February 20, 2026

Tips

Temporary access restrictions

Includes segments with temporary access restrictions.

After 5.60 km for 57 m

Customers only

Waypoints

Start point

Train Station

Get Directions

161 m

Penrhyndeudraeth

Highlight • Settlement

Penrhyndeudraeth, which means 'the headland of two beaches' in Welsh, is a serene small town that's well located for hiking adventures in some of Northern Eryri's less frequented ranges. There …

Tip by

5.53 km

Glaslyn Osprey Project Viewing Centre

Highlight • Viewpoint

Bywyd Gwyllt Glaslyn Wildlife (BGGW) is a Registered Charity (1172496) that is managing The Glaslyn Osprey Project at Prenteg near Porthmadog in Gwynedd.
A pair of Ospreys has been breeding …

Tip by

5.68 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

6.53 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

19.4 km

Welsh Highland Heritage Railway Station

Highlight • Structure

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

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

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

25.8 km

End point

Train Station

Way Types & Surfaces

Way Types

15.5 km

5.20 km

2.21 km

1.92 km

886 m

< 100 m

Surfaces

17.0 km

7.59 km

926 m

260 m

< 100 m

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)

Weather

Wednesday 20 May

18°C

11°C

64 %

Additional weather tips

Max wind speed: 23.0 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.

Navigate

Send to Phone

Save

Edit route

Download GPX

Move start point

Embed on a website

Report an Issue

Nearby routes

Moderate

4.6

345

Glyders, Ogwen Valley & Llanberis Pass loop from Bethesda — Snowdonia National Park

02:30h

49.3km

720m

Hard

4.8

219

Pen y Pass and Marchlyn Mawr climb loop from Llanberis

02:57h

54.6km

1,000m

Hard

4.2

229

Sychnant Pass and Conwy Valley Loop from Bethesda

03:31h

70.5km

1,010m

Hard

5.0

206

Brailsford Way loop from Caernarfon — Snowdonia National Park

03:40h

74.7km

910m

Hard

5.0

166

Snowdon Circuit

04:40h

91.6km

1,220m

Hard

116

Caernarfon from Betws-y-Coed loop — Parc Cenedlaethol Eryri / Snowdonia National Park

05:27h

107km

1,430m

Hard

117

Blaenau Ffestiniog, Beddgelert and Capel Curig Loop

04:20h

80.6km

1,290m

Moderate

4.0

110

Tour of the Llŷn Peninsula

04:06h

73.3km

800m

Moderate

5.0

107

Drws y Coed from Caernarfon loop — Parc Cenedlaethol Eryri / Snowdonia National Park

01:40h

37.1km

400m

Hard

5.0

A loop of three llyns from Trawsfynydd

03:32h

64.9km

1,020m

Hard

A loop around the Rhinog mountains — Snowdonia National Park

04:25h

81.1km

1,290m

Easy

Pont Aberglaslyn & the Causeway loop from Porthmadog — Snowdonia National Park

01:07h

24.9km

180m

Porthmadog Harbour – The Cob Causeway loop from Penrhyndeudraeth

Penrhyndeudraeth

Glaslyn Osprey Project Viewing Centre

Glaslyn Ospreys

Prenteg Climb

Welsh Highland Heritage Railway Station

Porthmadog Harbour

Porthmadog Harbour Railway Station

The Cob Causeway

Nearby routes

Sign up or log in to keep exploring this route

We value your privacy ⛰️

We value your privacy ⛰️