5.0
(4)
417
runners
38
runs
Jogging routes around Treflys traverse a landscape characterized by rolling hills, dense woodlands, and significant water features such as dams and reservoirs. The region offers a variety of terrain, from established paths along river valleys to more challenging ascents through forested areas. Runners can expect a mix of natural surfaces and some paved sections, providing diverse experiences for different preferences.
Last updated: May 8, 2026
24
runners
10.9km
01:15
250m
250m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
24
runners
18.4km
02:04
370m
370m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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27
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
16
runners
9.53km
01:02
140m
140m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
13
runners
9.73km
01:08
140m
140m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Beautiful church - well worth exploring
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Great view over Garreg Ddu Dam (not Craig Goch Dam!) after a steep but worthwhile climb
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Elan Valley is a mountain bikers dream. A mix of natural trails that follow the reservoirs and crest the lofty tops of each valley. There's also a great trailhead in the middle of the valley at Nantgwyllt for some great flowing singletrack.
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The old church, along with the manor house and nearby cottages, were enveloped by the waters and lost forever when Caban Coch dam was built. Among the lost houses was Cwm Elan, once the home of poet Percy Bysshe Shelley's uncle. Shelley visited on several occasions and fell in love with the area. In 1812 he tried to buy Nantgwyllt House, as a home to settle into with his wife Harriet. The old church at Nantgwyllt may have been lost, but in 1898 a new church was begun on high ground overlooking the Garreg-ddu viaduct. The architect was Stephen W Williams, who also built Elan Village to house workmen labouring to build the dams. The new church was erected at the southern end of the viaduct.
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It is an interesting structure to stumble upon and some great history to go with it
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There are currently 39 running routes around Treflys listed on komoot, offering a variety of experiences for different skill levels.
The majority of running routes in Treflys are classified as moderate, with 29 moderate trails and 10 difficult trails. There are no easy routes specifically listed, so moderate trails would be the most accessible option for less experienced runners.
Yes, many of the running routes in Treflys are circular, allowing you to start and finish at the same point. Examples include the popular Caban Coch Dam – Caban-Coch Dam and Reservoir loop from Llannerch y Cawr and the challenging Clawyd British Motte loop from Tirabad.
Running routes in Treflys traverse a varied landscape of rolling hills, dense woodlands, and river valleys. You can expect a mix of natural surfaces and some paved sections. Elevation gain varies significantly; for instance, the Clawyd British Motte loop features over 370 meters of ascent, while the Coed Chwefri loop has a more gentle 44 meters of elevation gain.
Treflys offers scenic running experiences with several notable natural features and landmarks. You can run past the impressive Caban-Coch Dam and Reservoir, explore the dramatic Wolf's Leap, River Irfon, or take in views from the Drygarn Fawr Summit Cairn. The Abergwesyn Valley also provides stunning scenery.
While there are no routes specifically marked as 'easy' for beginners or young children, many of the moderate routes, especially those with less elevation gain, could be suitable for active families. The Coed Chwefri loop from Builth Road, with its gentle elevation, might be a good option for a family run through woodlands.
Generally, dogs are welcome on public footpaths and trails in the Treflys area, but it's always recommended to keep them on a lead, especially when passing through farmland, near livestock, or in nature conservation areas. Always check local signage for specific restrictions.
Parking is typically available at common starting points for many routes, such as near villages or trailheads. For specific routes, it's advisable to check the route details on komoot, as parking information is often included by other users.
Access to some running routes in Treflys may be possible via public transport, particularly those starting near larger towns like Builth Wells. However, many trailheads in more rural areas might require private transport. It's best to research local bus services to specific starting points for each route.
The running routes in Treflys are highly rated by the komoot community, boasting an average score of 5.0 stars from 4 reviews. Runners often praise the diverse terrain, from reservoir paths to challenging woodland ascents, and the scenic beauty of the region's natural features.
Running routes in Treflys vary in length. You can find moderate routes like the Caban Coch Dam loop, which is about 10.9 km (6.8 miles), or longer, more challenging options such as the Clawyd British Motte loop, spanning 18.4 km (11.4 miles).
Yes, some routes incorporate historical elements. For example, the difficult Clawyd British Motte loop from Tirabad passes by historical sites, offering a blend of physical challenge and cultural interest.


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