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Llyn Trawsfynydd – Maentwrog Dam loop from Maentwrog

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Bike touring routes & trails

Llyn Trawsfynydd – Maentwrog Dam loop from Maentwrog

Hard

riders

Llyn Trawsfynydd – Maentwrog Dam loop from Maentwrog

04:11

49.9km

870m

Cycling

Hard bike ride. Very 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: April 3, 2026

Tips

Includes a very steep uphill segment

You may need to push your bike.

After 3.96 km for 166 m

Waypoints

Start point

Parking

Get Directions

491 m

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

2.27 km

Nurse Pandy-ddwyryd

Forest

2.52 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.

Tip by

4.47 km

View of Llyn Trawsfynydd

Highlight • Lake

Surprisingly steep uphill to here, but good views and the high point of the circuit around the Llyn.

Tip by

4.70 km

Stone Benches With View of Llyn Tegid

Highlight • Viewpoint

Since there is no resting place at the highest point of the lake circuit, you are all the happier a little below.

Translated by Google •

Tip by

14.1 km

Stone Bridge Over River in Parc Cenedlaethol Eryri

Highlight • River

Typical rural stone built bridge in a gorgeous country setting. Cycling along these back lanes and seeing these structures is like being in an open air museum.

Tip by

15.9 km

Forest Road Above Coed-y-Brenin

Highlight (Segment) • Viewpoint

Rough but fun forest road up above Coed-y-Brenin. There was snow on the floor at start of April, so choose the time of year wisely!

Tip by

19.7 km

Viewpoint

25.1 km

Bridge Over the Afon Mawddach

Highlight • Bridge

A small spectacular bridge over the Afon Mawddach. It's used by several of the mountain bike trails as well as runners and walkers so keep an eye out. Great views …

Tip by

26.4 km

Afon Gain Gorge on the Minotaur Trail

Highlight • Gorge

Recommended for everyone ?.

Tip by

49.8 km

Coed Caersaeson

Forest

49.9 km

End point

Parking

Way Types & Surfaces

Way Types

22.1 km

20.3 km

6.21 km

1.32 km

Surfaces

21.3 km

20.8 km

6.56 km

1.09 km

163 m

Elevation

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

Highest point (320 m)

Lowest point (80 m)

Weather

Tuesday 7 July

25°C

11°C

0 %

Additional weather tips

Max wind speed: 8.0 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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Llyn Trawsfynydd – Maentwrog Dam loop from Maentwrog

Llyn Trawsfynydd

Maentwrog Dam

View of Llyn Trawsfynydd

Stone Benches With View of Llyn Tegid

Stone Bridge Over River in Parc Cenedlaethol Eryri

Forest Road Above Coed-y-Brenin

Bridge Over the Afon Mawddach

Afon Gain Gorge on the Minotaur Trail

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