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View of Llyn Trawsfynydd – Maentwrog Dam loop from Maentwrog

Routes

Bike touring routes & trails

View of Llyn Trawsfynydd – Maentwrog Dam loop from Maentwrog

Easy

riders

View of Llyn Trawsfynydd – Maentwrog Dam loop from Maentwrog

00:49

10.4km

110m

Cycling

Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: May 28, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

Start point

Parking

Get Directions

3.11 km

Trawsfynydd Nuclear Power Station

Highlight • Other

Trawsfynydd nuclear power station was the only inland nuclear power plant in the UK. It was able to be situated here because of the large lake that provided sufficient cooling …

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3.62 km

Trawsfynydd Nuclear Power Station

Highlight • Monument

Here you can learn that the nuclear power plant is no longer in operation, serves as a (temporary) storage facility and should be dismantled by the end of the century.

Translated by Google •

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3.69 km

View of Llyn Trawsfynydd

Highlight • Viewpoint

Beautiful views across the lake and the mountains beyond. Originally a reservoir built for the nuclear power station nearby.

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3.84 km

An enormous man-made reservoir, Llyn Trawsfynydd originally provided cooling water for the local nuclear power station (now undergoing decommissioning). The lake lies in the west of Snowdonia National Park and …

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5.86 km

Maentwrog Dam

Highlight • Lake

Maentwrog Dam was built in the 1920s to provide a source of hydroelectric power for the Maentwrog power station. Later in 1965 the lake also became a source of cooling water for the Trawsyfynydd nuclear power station.

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9.62 km

Winding Road in Parc Cenedlaethol Eryri

Highlight • Cycleway

10.4 km

End point

Parking

Way Types & Surfaces

Way Types

4.14 km

4.12 km

2.02 km

< 100 m

Surfaces

4.46 km

3.18 km

2.26 km

453 m

Elevation

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

Weather

Sunday 12 July

25°C

12°C

0 %

Additional weather tips

Max wind speed: 22.0 km/h

to get more detailed weather forecasts along your route

Comments

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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View of Llyn Trawsfynydd – Maentwrog Dam loop from Maentwrog

Trawsfynydd Nuclear Power Station

Trawsfynydd Nuclear Power Station

View of Llyn Trawsfynydd

Llyn Trawsfynydd

Maentwrog Dam

Winding Road in Parc Cenedlaethol Eryri

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