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Running trails & routes

Llyn Trawsfynydd – View of Llyn Trawsfynydd loop from Maentwrog

Running trails & routes

Llyn Trawsfynydd – View of Llyn Trawsfynydd loop from Maentwrog

Moderate

8

runners

Llyn Trawsfynydd – View of Llyn Trawsfynydd loop from Maentwrog

00:38

5.97km

80m

Running

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: August 3, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc Cenedlaethol Eryri

Waypoints

A

Start point

Parking

1

884 m

Winding Road in Parc Cenedlaethol Eryri

Highlight • Cycleway

2

3.26 km

Llyn Trawsfynydd

Highlight • Structure

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 …

Tip by

3

3.41 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.

Tip by

4

3.48 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 •

Tip by

5

3.87 km

Llyn Trawsfynydd Visitor Centre

Highlight • Cafe

Cafe/restaurant and fishing centre at the lake. Open Thurs-Sun 8-2:30

Tip by

B

5.97 km

End point

Parking

Way Types & Surfaces

Way Types

2.48 km

2.15 km

965 m

380 m

Surfaces

2.48 km

2.23 km

1.09 km

181 m

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Elevation

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

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Weather

Powered by Foreca

Friday 16 October

13°C

3°C

0 %

Additional weather tips

Max wind speed: 13.0 km/h

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