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Bike touring routes & trails

Caernarfon Castle – Lôn Eifion Cycleway loop from Llanberis

Bike touring routes & trails

Caernarfon Castle – Lôn Eifion Cycleway loop from Llanberis

Hard

23

riders

Caernarfon Castle – Lôn Eifion Cycleway loop from Llanberis

05:43

93.3km

840m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 18, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

A

Start point

Bus stop

1.27 km

Ruins

Ruins

2

12.0 km

Caernarfon Castle

Highlight • Castle

A medieval fortress situated on the on the banks of the River Seiont, Caernarfon Castle has protected Caernarfon since the 11th century. The magnificent castle is open to visitors from …

Tip by

3

15.3 km

Welsh Highland Railway Steam Locomotives and Station

Highlight (Segment) • Monument

Pretty little train station

Translated by Google •

Tip by

4

22.0 km

Lôn Eifion Cycleway

Highlight • Cycleway

The Lôn Las Menai & Lôn Eifion cycleway follows an old railway trail from Caernarfon to Bryncir. If you decide to ride the whole route, it's 16.6 miles (27 km).

Tip by

5

41.7 km

Penmorfa Forest Path

Highlight • Trail

A nice section of forest path in amongst gorgeous woodland. It gets a tad narrow in places but a very nice bike section.

Tip by

6

64.7 km

National Cycle Network Route 8

Highlight • Cycleway

7

81.3 km

Fishermen's Pier

Highlight • Structure

8

81.5 km

Victoria Dock Marina, Caernarfon

Highlight • Structure

Caernarfon's Victoria Dock was built in the 1800s to receive timber sailed over from Scandinavia. It wasn't busy for long though, as the arrival of the railway somewhat undermined its …

Tip by

9

91.1 km

Llanberis Tunnel

Highlight • Structure

Great bike path with a small section through the hill for a change!

Tip by

B

93.3 km

End point

Bus stop

Way Types & Surfaces

Way Types

46.6 km

24.0 km

17.2 km

4.02 km

1.02 km

581 m

Surfaces

83.2 km

7.80 km

908 m

886 m

379 m

249 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 (190 m)

Lowest point (0 m)

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Weather

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Thursday 8 October

14°C

8°C

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