Llyn y Fan Fawr is a glacial lake region situated within the Black Mountain range of Brecon Beacons National Park in Powys, Wales. The area is defined by its dramatic glacial topography, featuring rugged escarpments, open moorland, and river valleys, with the lake itself nestled at the foot of peaks like Fan Brycheiniog. This diverse landscape, characterized by its remote tranquility and varied terrain, provides a setting for several sports like hiking, jogging, road cycling, touring cycling, and more. The…
66
Routes
4.5
(235)
Average rating
2317
People visited

103
runners
20.0km
02:48
830m
830m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

1
runners
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

5.0
(1)
96
runners
19.0km
02:42
790m
790m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

5.0
(1)
53
runners
16.0km
02:17
640m
640m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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3.5
(10)
37
hikers
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

4.0
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13
hikers
15.7km
04:52
560m
560m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

13
hikers
14.6km
04:45
620m
630m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

5.0
(1)
6
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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30
riders
46.5km
02:31
830m
830m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

5.0
(2)
23
riders
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

12
riders
38.5km
02:26
620m
620m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

7
riders
30.1km
01:28
450m
450m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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4.5
(4)
22
riders
11.9km
00:59
160m
150m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

3.0
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1
riders
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

1.0
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4
riders
37.5km
03:23
940m
940m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

5.0
(1)
7
riders
17.8km
01:31
310m
310m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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4.8
(4)
9
riders
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

6
riders
37.7km
02:51
610m
610m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

3.0
(1)
24
riders
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

3.0
(1)
11
riders
28.9km
02:26
480m
480m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Llyn y Fan Fawr is a glacial lake located in the Black Mountain range within the Brecon Beacons National Park in Powys, Wales. It is one of the largest glacial lakes in southern Wales, situated at the foot of Fan Brycheiniog. The area is known for its dramatic glacial topography, including rugged escarpments and open moorland.
Llyn y Fan Fawr offers a range of outdoor activities, including hiking, jogging, road cycling, touring cycling, and mountain biking. The region features diverse terrain suitable for various skill levels. More than 26,000 visitors have shared their experiences on komoot, with routes averaging a 4.54-star rating.
Yes, Llyn y Fan Fawr is a prime hiking destination with trails ranging from easy to difficult. Popular routes often encompass both Llyn y Fan Fawr and the nearby Llyn y Fan Fach. Hikers can find options in guides such as Hiking around Llyn y Fan Fawr and Easy hikes around Llyn y Fan Fawr.
The broader Carmarthenshire region, where Llyn y Fan Fawr is located, offers road cycling on uncrowded roads and mountain bike trails. Challenging road cycling routes are available, as well as traffic-free options. Cyclists can explore guides like Road Cycling Routes around Llyn y Fan Fawr and Traffic-free bike rides around Llyn y Fan Fawr.
Yes, mountain biking is an available activity in the Llyn y Fan Fawr region. Trails through forests and mountains offer challenging terrain for riders. Specific routes can be found in the MTB Trails around Llyn y Fan Fawr guide.
The area provides routes suitable for jogging, often featuring significant elevation changes. These routes traverse dramatic mountain ridges and past glacial lakes. Runners can find suitable options in the Running Trails around Llyn y Fan Fawr guide.
Yes, Llyn y Fan Fawr offers easy walks with views of the glacial lake, such as the 3.4-mile (5.5 km) loop from Moel Feity. Family-friendly options are also available. Hikers can consult the Family-friendly hikes around Llyn y Fan Fawr guide for suitable routes.
The region features prominent peaks like Fan Brycheiniog (802m), Picws Du (749m), and Fan Foel (781m), which form the Carmarthen Fans. The landscape includes rolling hills, open moorland, and river valleys. Several waterfalls, some up to 10 meters in height, can be found along the Nant-y-Llyn river.
Yes, several beautiful waterfalls can be discovered along the Nant-y-Llyn river, which feeds Llyn y Fan Fawr. Some of these waterfalls reach heights of up to 10 meters. Hikers interested in these features can find routes in the Waterfall hikes around Llyn y Fan Fawr guide.
While Llyn y Fan Fawr is in a remote setting, some public transport options may be available to the general area. Hikers can explore routes that start from bus stations. The Hikes from bus stations around Llyn y Fan Fawr guide provides relevant information.
The terrain around Llyn y Fan Fawr is characterized by rugged glacial topography, including prominent peaks and escarpments. Much of the land is peaty, which can result in wet and boggy conditions underfoot. Hikers are advised to wear sturdy boots due to the rugged and sometimes faint trails.
The Llyn y Fan Fawr area is home to various wildlife. In and around the lake, species such as shoreweed, quillwort, greater water-moss, freshwater limpets, caddisflies, and leeches can be found. Wild horses and majestic kites are also spotted in the region.

