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Routes
Bike touring routes & trails
United Kingdom
Wales
North Wales
Gwynedd
Trawsfynydd

Llyn Trawsfynydd – Maentwrog Dam loop from Trawsfynydd

Routes
Bike touring routes & trails
United Kingdom
Wales
North Wales
Gwynedd
Trawsfynydd

Llyn Trawsfynydd – Maentwrog Dam loop from Trawsfynydd

Hard

13

riders

Llyn Trawsfynydd – Maentwrog Dam loop from Trawsfynydd

02:37

34.4km

570m

Cycling

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

Last updated: August 20, 2026

Tips

Includes a segment in which cycling is not permitted

After 32.2 km for 156 m

Waypoints

A

Start point

Bus stop

Get Directions
1

1.69 km

Singletrack Trail in Parc Cenedlaethol Eryri

Highlight (Segment) • Trail

A bit muddy after rain but never too bad. Avoids the main road, well signposted.

Tip by

2

3.82 km

Llyn Trawsfynydd Visitor Centre

Highlight • Cafe

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

Tip by

3

16.0 km

Country Road Along the River in Parc Cenedlaethol Eryri

Highlight (Segment) • Viewpoint

As always great scenery with fresh air some decent climbs well worth it.

Tip by

20.2 km

Ty'n-y-bryn Covert

Forest

5

24.9 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

26.7 km

Nurse Pandy-ddwyryd

Forest

7

26.9 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

8

28.9 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

9

29.1 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

10

32.2 km

Llyn Trawsfynydd Bridge

Highlight • Bridge

This footbridge was built to replace some of the lost footpaths that the lake flooded. The old track here linked Trawsfynydd village with the old chapel. It's a metal lattice …

Tip by

B

34.4 km

End point

Bus stop

Loading

Way Types & Surfaces

Way Types

16.1 km

6.33 km

5.73 km

4.43 km

1.91 km

< 100 m

Surfaces

13.8 km

13.3 km

6.65 km

737 m

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Elevation

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

Highest point (310 m)

Lowest point (0 m)

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Weather

Powered by Foreca

Today

Tuesday 10 November

8°C

2°C

77 %

Additional weather tips

There’s a fairly high chance of rain. Consider packing a waterproof jacket.

to get more detailed weather forecasts along your route

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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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