Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Login or Signup

Road cycling routes

Old Railway Tunnel – Porth Penrhyn Harbour loop from Bethesda

Road cycling routes

Old Railway Tunnel – Porth Penrhyn Harbour loop from Bethesda

Easy

5.0

(2)

38

riders

Old Railway Tunnel – Porth Penrhyn Harbour loop from Bethesda

00:57

21.3km

200m

Road cycling

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: May 28, 2026

Tips

Includes a segment in which cycling is not permitted

After 10.6 km for 131 m

Waypoints

A

Start point

Bus stop

Get Directions

1

2.19 km

Old Railway Tunnel

Highlight • Structure

2

3.44 km

Bangor to Tregarth Railway Path

Highlight (Segment) • Cycleway

Old railway path converted into a bike path. Goes from the South of Bangor down to Tregarth. The surface is compact gravel so perfect for even the fanciest road bikes. Nice to escape the roads for a bit.

Tip by

3

9.20 km

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 dockside as well as lovely views across the water.

Tip by

4

9.36 km

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, …

Translated by Google •

Tip by

5

10.7 km

Bangor Pier

Highlight • Structure

6

10.8 km

View of the Menai Strait

Highlight • River

Great views over the Menai strait

Tip by

B

21.3 km

End point

Bus stop

Way Types & Surfaces

Way Types

18.5 km

1.52 km

657 m

363 m

168 m

< 100 m

Surfaces

21.0 km

150 m

< 100 m

< 100 m

Sign up to see more specific route details

Sign up for free

Elevation

Elevation

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

Sign up to see more specific route details

Sign up for free

Weather

Powered by Foreca

Sunday 31 May

16°C

12°C

-- %

Additional weather tips

Max wind speed: -- 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

Print

Share

Embed on a website

Report an Issue

Nearby routes

5.0

722

Pen y Pass and Beddgelert from Bangor loop — Parc Cenedlaethol Eryri / Snowdonia National Park

03:32h

74.7km

950m

4.6

340

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

02:30h

49.3km

720m

4.8

215

Pen y Pass and Marchlyn Mawr climb loop from Llanberis

02:57h

54.6km

1,000m

4.3

231

Sychnant Pass and Conwy Valley Loop from Bethesda

03:31h

70.5km

1,010m

5.0

204

Brailsford Way loop from Caernarfon — Snowdonia National Park

03:40h

74.7km

910m

5.0

218

Beddgelert from Bangor loop

03:33h

76.6km

870m

5.0

168

Snowdon Circuit

04:40h

91.6km

1,220m

119

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

05:27h

107km

1,430m

121

Blaenau Ffestiniog, Beddgelert and Capel Curig Loop

04:20h

80.6km

1,290m

5.0

130

Great Orme from Penmaenmawr loop

02:06h

41.6km

650m

5.0

94

A loop of the Carneddau from Penmaenmawr

03:27h

66.2km

1,000m

5.0

105

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

01:40h

37.1km

400m