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United Kingdom
Wales
North Wales
Gwynedd

Llyn Trawsfynydd

The best walks and hikes around Llyn Trawsfynydd

4.5

(712)

5,046

hikers

13

hikes

Hikes around Llyn Trawsfynydd explore the landscape surrounding a large man-made reservoir within Snowdonia National Park. The area's terrain offers a mix of gentle lakeside paths and the more rugged, trackless routes of the Rhinog mountains to the west. This landscape is characterized by a combination of open water, surrounding hills, and the industrial heritage of the decommissioned Trawsfynydd power station on the lake's shore.

Best hiking trails around Llyn Trawsfynydd

  • The most popular hiking route is Maentwrog Dam loop…

Last updated: May 10, 2026

5.0

(2)

17

hikers

#1.

Northern Rhinogs Loop

13.6km

04:16

510m

510m

The Northern Rhinog loop is a challenging 8.5-mile hike in Snowdonia National Park, featuring rugged terrain and panoramic views.

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Moderate

3

hikers

33.8km

11:59

1,720m

1,830m

Hike the Cambrian Way: Rhinogs Section, a difficult 21.0-mile route through Snowdonia's rugged mountains, gaining 5650 feet.

Hard
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Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

3.7

(3)

8

hikers

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Popular around Llyn Trawsfynydd

MTB Trails around Llyn Trawsfynydd

Road Cycling Routes around Llyn Trawsfynydd

Cycling around Llyn Trawsfynydd

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Gravel biking around Llyn Trawsfynydd

Tips from the Community

Glyn
April 8, 2026, Llyn Trawsfynydd Visitor Centre

Prysor Cafe now open most days, nice seating outside overlooking llyn.

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Henry
October 14, 2025, The Roman Steps

Steady, rocky climb through a majestic valley. A lot of the path follows the stream so can be wet and boggy. This is fairly challenging and better for more experienced walkers.

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Clive G
September 27, 2025, Llyn Hywel

A wild and beautiful place, high between Rhinog Fach and Y Llethr

Translated by Google

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Clive G
September 27, 2025, Rhinog Fach Summit

It is a steep climb to get here from either the north or south, but easier than Rhinog Fawr from the west. Great views, and the cliffs of the west side side are a playground for rockclimbers.

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Clive G
September 27, 2025, Bwlch Drws Ardudwy

This the deep narrow pass between Rhinog Fach and Rhinog Fawr. This photo shows where the path down from Rhinog Fawr meets the path that cuts through the pass, and also the steep path up Rhinog Fach. Also note how rough it is.

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The Rhinogs are rightly recognised as being the roughest hills in Wales, so any ascent should bear that in mind. The easiest and clearest route is from the East, starting from the small car park at the end of the lane off the A470. This route is easy to follow and relatively easy to walk. The routes from the west include very difficult walking and few paths.

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perfect after a ride from Machynlleth "Canolfan Prysor Centre" with all the usual cafe favourites, good food and friendly staff.

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Good campsite by the water with plenty space to pitch up. Hot showers, indoor kitchen and drying spot. Pay cash or BACS - quiet when we called in without a booking on a Friday, lovely owners "we always have room for cyclists". a good option to finish day 1 of Traws Eryri.

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Frequently Asked Questions

Are there any family-friendly or easy walks around Llyn Trawsfynydd?

Yes, the area offers several easier options suitable for families. There is a well-maintained, mostly flat trail that circumnavigates much of the lake, providing great views without strenuous climbs. For a dedicated family outing, Hiking loop from Trawsfynydd is a moderate 6.5-mile (10.4 km) option that explores the local countryside without being overly demanding.

What are the options for challenging hikes in the area?

For experienced hikers seeking a challenge, the rugged Rhinog mountains to the west of the lake are ideal. This area is known for its tough, often trackless terrain. A great example of a demanding route is the Northern Rhinog loop, a strenuous hike that rewards with solitude and spectacular views across Snowdonia.

Can I bring my dog on the trails around Llyn Trawsfynydd?

Dogs are welcome on most public footpaths around Llyn Trawsfynydd, but they should be kept under close control, especially near livestock. The lakeside path is a popular choice for dog walkers. Always be prepared to use a lead, as you will likely cross farmland.

How can I get to Llyn Trawsfynydd using public transport?

Reaching Llyn Trawsfynydd by public transport can be challenging as there are no direct train stations in the immediate vicinity. Local bus services, such as the T2 TrawsCymru route, connect to nearby towns and may have stops in or near Trawsfynydd village. It is essential to check the latest timetables before you travel as services can be infrequent.

Where can I park for a walk around Llyn Trawsfynydd?

There are several parking options available. The main car park for the lakeside trail is located near the visitor centre and café. For quieter walks, Bod Petryal offers free parking and picnic benches, serving as a good starting point for trails in the surrounding forest. Always check local signage for any parking restrictions or fees.

Is there a full circular walk around the entire lake?

While there is an extensive trail network around the lake, a complete, uninterrupted circular path is not fully established for walkers. The main trail covers a large portion of the shoreline and is popular with both walkers and cyclists. For a satisfying loop hike, consider the Foel Penolau Summit – Moel Ysgyfarnogod summit loop which offers fantastic views over the lake and surrounding landscape.

What is the terrain like on the main lakeside path?

The main path around the lake is generally well-maintained with a mix of tarmac, gravel, and compacted earth surfaces. It is mostly flat with some gentle inclines, making it suitable for a wide range of fitness levels. However, some sections can be narrow, and conditions may vary depending on the weather.

Can you see the old power station while hiking?

Yes, the decommissioned Trawsfynydd nuclear power station is a prominent and unique feature of the landscape. Many of the trails, especially those along the eastern and southern shores of the lake, offer clear and dramatic views of the station's imposing structures against the backdrop of the mountains.

Are there any historical sites to see on a walk?

Absolutely. A short hike from the lake can take you to Tomen y Mur, the site of a Roman fort and a later Norman motte. This historical site offers a fascinating glimpse into the area's ancient past and provides commanding views over Llyn Trawsfynydd and the surrounding landscape.

What do other hikers enjoy most about the Llyn Trawsfynydd area?

The area is highly regarded by the komoot community, with an average rating of 4.5 stars. Hikers frequently praise the unique contrast between the tranquil lake, the wild Rhinog mountains, and the striking industrial heritage of the power station. The variety of trails, from gentle lakeside strolls to rugged mountain scrambles, is also a major highlight.

Are there any nearby forests with good hiking trails?

Yes, the highly-rated Coed y Brenin Forest Park is very close to Llyn Trawsfynydd. It's a popular favourite for both hiking and mountain biking, offering numerous waymarked trails through beautiful woodland scenery. The park also has a visitor centre with a café and other facilities.

Most popular routes around Llyn Trawsfynydd

MTB Trails around Llyn Trawsfynydd

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