Routes

Planner

Features

Updates

App

Get the App

Routes

Bike touring routes & trails

Maentwrog Dam – Llyn Trawsfynydd loop from Trawsfynydd

Routes

Bike touring routes & trails

Maentwrog Dam – Llyn Trawsfynydd loop from Trawsfynydd

Moderate

riders

Maentwrog Dam – Llyn Trawsfynydd loop from Trawsfynydd

01:40

20.6km

310m

Cycling

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

Last updated: May 14, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Ceunant Llennyrch National Nature Reserve

Parc Cenedlaethol Eryri

Waypoints

Start point

Bus stop

Get Directions

5.18 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

5.19 km

Picnic Area with View of Llyn Trawsfynydd

Highlight • Viewpoint

This picnic spot provides lovely views across Llyn Trawsfynydd and the surrounding mountains. The lake is artificial, created in the 1920s to supply the Maentwrog power station, though it later …

Tip by

5.40 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

7.35 km

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

7.60 km

Nurse Pandy-ddwyryd

Forest

9.30 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 …

Tip by

9.59 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

10.2 km

Llyn Trawsfynydd Visitor Centre

Highlight • Cafe

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

Tip by

20.6 km

Trawsfynydd Village

Highlight • Bridge

The village of Trawsfynydd, on the banks of the artificial llyn of the same name, is a great basecamp slap bang in the middle of Eryri (Snowdonia) National Park. The …

Tip by

20.6 km

End point

Bus stop

Way Types & Surfaces

Way Types

7.39 km

7.12 km

3.73 km

1.81 km

490 m

< 100 m

Surfaces

7.95 km

7.35 km

4.84 km

496 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 (190 m)

Weather

Saturday 30 May

16°C

12°C

40 %

Additional weather tips

Max wind speed: 19.0 km/h

to get more detailed weather forecasts along your route

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

Navigate

Send to Phone

Save

Edit route

Download GPX

Move start point

Embed on a website

Report an Issue

Nearby routes

Moderate

4.9

225

Mawddach Trail & Cregennan Lakes loop from Barmouth — Snowdonia National Park

02:19h

33.3km

430m

Hard

4.9

249

Llanberis & the Llyns loop from Beddgelert — Snowdonia National Park

03:04h

46.9km

630m

Easy

4.4

131

Around Lake Bala from Bala

01:10h

18.5km

120m

Hard

4.3

Ogwen Valley loop from Capel Curig — Snowdonia National Park

05:23h

78.1km

970m

Hard

5.0

105

Pen-y-Pass & Ogwen Valley loop from Llanberis — Eryri / Snowdonia National Park

03:28h

47.0km

700m

Hard

Blaenau Festiniog & Betws-y-Coed loop from Beddgelert — Eryri / Snowdonia National Park

05:02h

71.1km

1,180m

Moderate

4.3

Mawddach Trail Loop

01:59h

31.5km

240m

Hard

5.0

Beddgelert & Aberglaslyn loop from Porthmadog — Snowdonia National Park

03:16h

52.4km

500m

Moderate

5.0

Lôn Eifion and Lôn Gwyrfai Loop

02:29h

40.1km

370m

Hard

5.0

Around the Rhinogydd from Dolgellau — Snowdonia National Park

05:50h

80.2km

1,190m

Hard

5.0

Pont Briwet & Harlech Castle loop from Porthmadog — Eryri / Snowdonia National Park

02:17h

33.6km

510m

Hard

5.0

Tal-y-Llyn or Llyn Mwyngil & Mawddach Trail loop from Dolgellau

03:44h

56.1km

790m

Maentwrog Dam – Llyn Trawsfynydd loop from Trawsfynydd

Stone Benches With View of Llyn Tegid

Picnic Area with View of Llyn Trawsfynydd

View of Llyn Trawsfynydd

Maentwrog Dam

Trawsfynydd Nuclear Power Station

Llyn Trawsfynydd

Llyn Trawsfynydd Visitor Centre

Trawsfynydd Village

Nearby routes

Sign up or log in to keep exploring this route

We value your privacy ⛰️

We value your privacy ⛰️