The best MTB trails around Usk Reservoir
4.9
(8)
64
riders
8
rides
Mountain biking around Usk Reservoir offers diverse routes through the Brecon Beacons National Park, characterized by the reservoir itself, surrounding forests like Glasfynydd Forest, and rolling hills. The terrain includes wide stoned tracks and quiet public roads, with views of the mountainous Carmarthen Fans and Black Mountains. This area provides a mix of accessible and challenging trails for mountain bikers.
Best mountain bike trails around Usk Reservoir
- The most popular mountain bike trail is Usk Reservoir and Glasfynydd Forest loop, an easy 7.4 miles (11.9 km) trail that takes 58 minutes to complete. This circular route follows wide stoned tracks around the reservoir, offering scenic views.
- Another top favourite among local mountain bikers is Mynydd Myddfai Trig Point – View of Usk Reservoir loop from Ynysfaen Camping, a moderate 11.1 miles (17.8 km) path. This route includes significant elevation gain and offers panoramic views of the reservoir and surrounding uplands.
- Local mountain bikers also love the Fan Gyhirych Forest Road – Usk Reservoir Track loop from Myddfai, a 47.5 miles (76.5 km) trail leading through forest roads and tracks, often completed in about 6 hours 57 minutes. This difficult route features substantial elevation changes.
- Mountain biking around Usk Reservoir is defined by reservoir paths, forest tracks, and rolling hills. The network offers options for different ability levels, from easy loops to challenging long-distance routes.
- The routes in Usk Reservoir are highly rated by the komoot community with an average score of 4.8 stars from over 6 reviews. More than 60 mountain bikers have used komoot to explore Usk Reservoir's varied terrain.
Last updated: July 7, 2026
4.7
(6)
24
riders
11.9km
00:59
160m
150m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
5.0
(1)
7
riders
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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10
riders
52.5km
04:57
1,090m
1,090m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
9
riders
87.4km
07:14
1,580m
1,580m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
4
riders
25.6km
01:45
290m
290m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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Tips from the Community
Cwm R MTB trail is completely blocked at top end due to hundreds of wind fallen trees this winter. Please consider before as you can not navigate loop.
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Good selection of cakes, coffee & snacks. Great stop off after a bike ride or hike.
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Moderate trail for all to explore and enjoy the beautiful sceneries
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Moderate trail for most to enjoy, light elevation and amazing views on a clear day
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Moderate trail with slight elevation and amazing views 👌🏼
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THE TALE OF THE WELSH “ROBIN HOOD” Known as Twm Siôn Cati Twm Siôn Cati is a historically known figure in Welsh folklore. A tale recounted by Meyrick recalls how Twm was asked by a poor man to steal a pitcher for him. They went together to a merchant where Twm started belittling the man's wares. Having told his friend secretly to take the pitcher of his choice, Twm distracted the merchant by telling him there was a hole in one of the pitchers, which the man denied. Twm desired him to put his hand in the pitcher to test it and the man still denied there was a hole. Twm then asked him how, if there was no hole, could he have put his hand inside? By this time his friend had disappeared with his pitcher, undetected. A tale from Prichard's book involves an occasion when Twm is staying in an inn overnight and realises other people are planning to rob him the following day after he sets off. He has a large sum of money with him. The following morning he behaves as though his money is in the pack-saddle of his horse. When the highwayman catches up, Twm drops the saddle in the middle of a pool. The highwayman wades into the pool to fetch it, Twm takes the opportunity to make off with the highwayman's horse. A complication arises because the horse responds to the voice of the highwayman crying "Stop!" Luckily Twm, in terror, happens to shout a word which makes the horse gallop on again, and he is conveyed to safety. Another tale recounts how Twm waylaid a rich squire, who was accompanied by his daughter, Twm was so smitten with her that he returned her jewellery to her and attempted to woo her, against her father's opposition and, initially, her own. One full moon shortly after the robbery, he crept to her window, roused her from sleep, caught her hand at the window and kissed it, refusing to let her go until she promised to marry him. She wouldn't promise so Twm drew his dagger, drew blood on her wrist and threatened to sever her hand unless she assented to marriage forthwith. She agreed to marry him and she kept her hand. Their marriage followed soon after, despite her father's views and the directness of Twm's courtship methods. The girl was supposedly the widow of the sheriff of Carmarthen. Through this marriage Twm is supposed to have gained respectability, eventually becoming a justice of the peace, sitting in judgement on others, a position he held until his death aged 79.
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Dolauhirion Bridge dates from 1773 and is attributed to William Edwards. It is a stone bridge with an 83 ft. span and 12 ft. carriageway at the crown. The bridge has a plain segmental arch and stone parapets. It has been recognised as one of the 12 most beautiful bridges in the world. (Source: https://coflein.gov.uk/en/site/23969?term=Dolauhirion)
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Frequently Asked Questions
How many mountain bike trails are available around Usk Reservoir?
There are 8 mountain bike trails around Usk Reservoir listed on komoot, catering to various skill levels. You'll find 2 easy routes, 3 moderate, and 3 difficult options.
Are there easy mountain bike trails suitable for beginners or families?
Yes, Usk Reservoir offers easy mountain bike trails perfect for beginners or families. A popular choice is the Usk Reservoir and Glasfynydd Forest loop, an easy 7.4-mile (11.9 km) circular route that follows wide stoned tracks around the reservoir. Another easy option is the Dolauhirion Bridge – Woodland Gravel Path loop from Llandovery, which is 25.6 km long.
What kind of terrain can I expect on the mountain bike trails around Usk Reservoir?
The terrain around Usk Reservoir is varied, featuring wide stoned tracks, quiet public roads, and forest tracks. While many routes are on well-maintained surfaces, some can become muddy when wet. More challenging trails weave through surrounding hills and forests, offering significant elevation changes.
Are there any circular mountain bike routes around Usk Reservoir?
Yes, circular routes are a highlight of mountain biking around Usk Reservoir. The most popular is the Usk Reservoir and Glasfynydd Forest loop, which is 7.4 miles (11.9 km) long and offers scenic views. Other circular options include the Mynydd Myddfai Trig Point – View of Usk Reservoir loop from Ynysfaen Camping and the longer Fan Gyhirych Forest Road – Usk Reservoir Track loop from Myddfai.
What natural features or landmarks can I see while mountain biking around Usk Reservoir?
Mountain biking around Usk Reservoir offers stunning natural features and panoramic views. You'll encounter the beautiful reservoir itself, surrounded by the lush Glasfynydd Forest, and rolling hills. Trails provide dramatic vistas of the mountainous Carmarthen Fans and the Black Mountains. The area is also known for its dark skies, making it a top spot for stargazing.
Is Usk Reservoir a good place for advanced mountain bikers looking for a challenge?
Absolutely. For advanced mountain bikers, Usk Reservoir offers challenging routes with significant elevation gains. The Fan Gyhirych Forest Road – Usk Reservoir Track loop from Myddfai is a difficult 47.5-mile (76.5 km) trail with substantial elevation changes, often taking nearly 7 hours to complete. Another difficult option is the Forest Track – Llandovery Castle Ruins loop from Llandovery, which is 52.5 km long.
What do other mountain bikers enjoy most about the trails around Usk Reservoir?
The trails around Usk Reservoir are highly rated by the komoot community, with an average score of 4.8 stars. Mountain bikers often praise the scenic views of the reservoir and surrounding mountains, the variety of terrain from easy forest tracks to challenging uplands, and the tranquil natural environment within the Brecon Beacons National Park.
Are there any picnic areas or places to rest along the mountain bike trails?
Yes, several picnic tables are strategically placed along the trails around Usk Reservoir. These spots offer natural places to rest, refuel, and enjoy the attractive views of the reservoir and its surroundings.
What is the best time of year to go mountain biking at Usk Reservoir?
Usk Reservoir can be enjoyed year-round, but spring and autumn often offer the most pleasant conditions with milder temperatures and beautiful scenery. Summer is also popular, but trails can be busier. Be aware that some tracks can become muddy during wet weather, so appropriate gear is always recommended.
Where can I find parking for mountain biking at Usk Reservoir?
Parking is available at Usk Reservoir, typically near the main access points to the trails. Specific parking details can often be found on local signage or within the komoot tour descriptions for individual routes, such as the starting point for the Mynydd Myddfai Trig Point – View of Usk Reservoir loop from Ynysfaen Camping.
Are the mountain bike trails around Usk Reservoir dog-friendly?
Many trails in the Usk Reservoir area, particularly the wider forest tracks and paths, are suitable for dogs. However, it's always best to keep dogs under control, especially around livestock or wildlife, and to check specific trail regulations within the Brecon Beacons National Park. Always carry water for your dog and clean up after them.
Are there any other activities or attractions near Usk Reservoir besides mountain biking?
Beyond mountain biking, Usk Reservoir and its surroundings offer a range of outdoor activities. You can enjoy hiking on numerous trails, fishing for brown and rainbow trout in the reservoir, and wildlife spotting, including red kites. The area is also renowned for stargazing due to its remote location. A short distance away, Craig-y-Nos Country Park offers beautiful gardens and a historic castle.
Most popular routes around Usk Reservoir
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