Fan Hir Ridge, Fan Brycheiniog & Lyn y Fan Fach loop from Tafarn y Garreg
Fan Hir Ridge, Fan Brycheiniog & Lyn y Fan Fach loop from Tafarn y Garreg
103
runners
02:48
20.0km
830m
Running
This difficult jogging route takes you on a challenging journey across the Carmarthen Fans, offering extensive ridge walking and views of glacial lakes like Llyn y Fan Fach. You'll cover 12.4 miles (20.0 km) with a significant elevation gain of 2715 feet (828 metres), which typically takes around 2 hours…
Last updated: April 23, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Waypoints
Start point
Parking
Get Directions
4.74 km
Highlight • Trail
Tip by
5.82 km
Highlight • Natural Monument
Tip by
6.52 km
Highlight • Natural Monument
Tip by
10.6 km
Highlight • Viewpoint
Tip by
17.4 km
Highlight • Natural Monument
Tip by
20.0 km
End point
Parking
Way Types & Surfaces
Way Types
13.5 km
4.60 km
1.87 km
< 100 m
Surfaces
14.0 km
4.20 km
1.56 km
159 m
< 100 m
Sign up to see more specific route details
Sign up for free
Elevation
Sign up to see more specific route details
Sign up for free
Weather
Powered by Foreca
Saturday 9 May
12°C
3°C
0 %
Additional weather tips
Max wind speed: 18.0 km/h
to get more detailed weather forecasts along your route
This route was planned by komoot.
This loop is considered difficult and strenuous, primarily due to significant elevation gain and varied, often rugged, terrain. While some sections along the ridges, like Fan Hir Ridge, offer clear paths, expect steep ascents and descents. You'll encounter rocky paths, loose scree in areas like the gulley from Picws Du, and potentially boggy ground, especially in certain seasons. Sure-footedness and sturdy footwear are essential.
While komoot categorizes this route as 'jogging', its technical nature, with steep climbs, rocky sections, and scree, means continuous jogging is likely only feasible for highly conditioned and experienced trail runners. For most, it will be a challenging hike with intermittent opportunities for jogging. The tour data suggests a duration of approximately 2 hours 47 minutes for jogging, but this can vary significantly based on fitness and conditions.
The route offers breathtaking and dramatic landscapes. You'll experience exceptional ridge walking along the 'scalloped edge of the Carmarthen Fans', with magnificent views of glacial lakes like Llyn y Fan Fach and Llyn y Fan Fawr. Key summits include Fan Hir Ridge, Fan Brycheiniog Summit and Shelter (the highest point in the Black Mountain range), and Fan Foel. You'll also pass the beautiful Nant Tawe Fechan Waterfalls.
The loop typically starts from Tafarn y Garreg. There is parking available in the vicinity, often near the Tafarn y Garreg pub. It's advisable to arrive early, especially on weekends or during peak season, as parking can fill up quickly for popular trails in the Bannau Brycheiniog National Park.
Yes, the trail is generally dog-friendly. However, given the challenging terrain, steep sections, and potential for loose scree, ensure your dog is fit and accustomed to such conditions. Always keep dogs under close control, preferably on a lead, especially near livestock and to protect ground-nesting birds, as this is within the Bannau Brycheiniog National Park.
The best time to visit is typically from late spring to early autumn (May to October) when the weather is generally milder and the days are longer. However, even in summer, conditions can change rapidly on the exposed ridges. Winter can offer stunning, but much more challenging, conditions requiring appropriate gear and experience. Always check the weather forecast before heading out.
No, there are no specific permits or entrance fees required to access this trail or the Bannau Brycheiniog (Brecon Beacons) National Park itself. However, standard National Park regulations apply, such as keeping dogs on leads, taking all litter home, and respecting the natural environment and local communities.
Yes, sections of this route coincide with other established long-distance paths. Approximately 58% of the loop follows parts of the Beacons Way, 52% overlaps with the Cambrian Way, and about 12% is part of the South Wales Traverse. This means you might encounter markers for these trails along your journey.
Llyn y Fan Fach is not only a beautiful glacial lake but is also steeped in Welsh folklore, famously associated with the legend of 'The Lady of the Lake'. Its enchanting beauty and cultural significance have led to it being recognized by Lonely Planet as one of the 1000 must-see places in the world, making it a truly special highlight of the route.
Yes, the starting point at Tafarn y Garreg is known for the Tafarn y Garreg pub, which can be a welcome sight for refreshments after completing the challenging loop. While specific cafes might be limited directly at the trailhead, other amenities can be found in nearby villages within the Bannau Brycheiniog National Park.
The exposed nature of the ridges, particularly Fan Hir Ridge and Fan Brycheiniog Summit and Shelter, means weather can change very quickly. Be prepared for strong winds, sudden drops in temperature, and poor visibility, even on days that start clear. Always carry appropriate waterproof and warm layers, and consider navigation tools beyond a phone, as signal can be unreliable.