10
runners
3
runs
Jogging around Llyn Alwen offers diverse landscapes, including forest tracks, paths along the water's edge, and moorland. The region is characterized by the Alwen Reservoir, surrounded by parts of the Hiraethog Forest and the open moorland of Mynydd Hiraethog. These varied environments provide a mix of gravel, trail paths, and fire roads, with some open grassy sections, suitable for different running experiences.
Last updated: May 11, 2026
3
runners
11.9km
01:18
230m
230m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
runners
4.97km
00:32
70m
70m
Easy run. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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4
runners
8.68km
00:59
220m
210m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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The views over Alwen Reservoir from this section along the northern shore are simply wonderful! You'll take them in if you follow the waymarked Alwen or Lakes Circular routes. You move between open views and between the trees, but both are pretty spectacular, especially at sunset.
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The running routes around Llyn Alwen offer a diverse mix of terrain. You'll find forest tracks, paths along the water's edge, and open moorland sections. The surfaces vary, including gravel, trail paths, fire roads, and some open grassy areas, providing a varied experience for runners.
Yes, there is an easy route perfect for beginners or a more relaxed jog. The View of Llyn Brenig loop from Alwen Dam is a 3.1 miles (5.0 km) trail that takes about 32 minutes to complete. It offers scenic reservoir surroundings without significant elevation changes.
Yes, Llyn Alwen's trails are generally dog-friendly. The Alwen Trail, which forms the basis for many running routes, is a shared-use path. However, always ensure your dog is under control, especially in areas with livestock or wildlife, and be mindful of other users.
Absolutely. Many of the routes around Llyn Alwen are circular, allowing you to start and finish at the same point. A popular option is the Alwen Reservoir – Tai-isaf loop from Alwen Dam, which is 6.9 miles (11.1 km) long and offers continuous scenic views.
Runners can enjoy constantly changing views across the reservoir and towards the mountains of Eryri National Park (Snowdonia National Park). The elevated moorland sections provide stunning panoramic landscape views. You'll also pass through parts of the Hiraethog Forest and experience the wildness of Mynydd Hiraethog, a Site of Special Scientific Interest.
Direct public transport options to Llyn Alwen are limited. It's generally recommended to travel by car. For detailed information on local transport, it's best to check regional bus services or plan your journey in advance.
While Llyn Alwen itself is more remote, the nearby Llyn Brenig, which is connected by trails, has a visitor center with a café and toilets. This can be a convenient stop if you're combining routes or looking for refreshments after your run.
Llyn Alwen is beautiful year-round, but the best time for running is generally during spring, summer, and early autumn when the weather is milder and trails are less likely to be muddy. While generally well-drained, some sections may be muddy after heavy rain, so appropriate footwear is always advised.
Yes, the Alwen Trail links directly to the nearby Llyn Brenig, allowing for longer runs or combined routes. For example, the 'Two Lakes Trail' is a significant route that covers approximately 14.1 miles (22.7 km), offering an extended running experience between the two reservoirs.
The komoot community frequently praises the diverse landscapes and well-maintained trails around Llyn Alwen. Runners particularly enjoy the mix of forest tracks, reservoir-side paths, and open moorland, along with the stunning views across the water and towards Eryri National Park. The variety of routes, from easy to moderate, also makes it appealing to a wide range of abilities.
Yes, the area around Llyn Alwen holds historical significance. The Alwen Reservoir and its dam were constructed in the early 20th century. Additionally, Bronze Age artifacts, burial mounds (ring cairns and barrows), and foundations of 16th-century farmhouses have been discovered along the trails, offering glimpses into the region's past.
Yes, parking is available at various points around Llyn Alwen, including near the Alwen Dam, which serves as a common starting point for several routes. These parking areas provide convenient access to the trail network.


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