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.
Last updated: May 10, 2026
5.0
(2)
17
hikers
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.
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.

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4.2
(5)
12
hikers
9.40km
02:50
300m
300m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.2
(5)
13
hikers
10.4km
03:05
300m
300m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
3.7
(3)
8
hikers
7.68km
02:05
110m
110m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Prysor Cafe now open most days, nice seating outside overlooking llyn.
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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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A wild and beautiful place, high between Rhinog Fach and Y Llethr
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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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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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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.


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