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Wales
South Wales
Carmarthenshire

Allt Rhyd Y Groes National Nature Reserve

The best traffic-free bike rides around Allt Rhyd Y Groes National Nature Reserve

4.7

(3)

81

riders

7

rides

Gravel biking around Allt Rhyd Y Groes National Nature Reserve offers routes through sessile oak woodlands and steep gorges carved by rivers like the Towy and Afon Pysgotwr Fawr. The terrain includes diverse habitats such as craggy heathland and grasslands, with tumbling streams and waterfalls like Pwll Uffern. This landscape provides varied surfaces and gradients suitable for gravel bikes, often utilizing forest roads within Natural Resources Wales-managed areas.

Best no traffic gravel bike trails around Allt Rhyd Y Groes National…

Last updated: May 13, 2026

3

riders

#1.

The Towy Bridge Inn – View of Llyn Brianne loop from RSPB Gwenffrwd-Dinas

65.3km

05:07

1,370m

1,370m

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Popular around Allt Rhyd Y Groes National Nature Reserve

Traffic-free bike rides around Allt Rhyd Y Groes National Nature Reserve

Traffic-free bike rides around Allt Rhyd Y Groes National Nature Reserve

Tips from the Community

chris Thomas
April 20, 2025, Cwm Rhaeadr Mountain Bike Trail

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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It was a truly stunning spot to take in the scenery from this elevated panoramic viewpoint. Highly recommended.

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Andy Bryant
February 4, 2025, Llyn Brianne Dam

A short climb up from the road brings you to the Dam and carpark, there is no access over the Dam itself. But you do get a good view over the spillway and valley below.

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Built in 1913 the Rhandirmwyn Bridge links the two sides of the Towy valley by this rivetted girder road bridge. On the southern side you'll find the Towy Bridge Inn, a lovely riverside pub.

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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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More stunning forestry gravel that links the Tregaron mountain road over towards Tyn y Cornel hostel.

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maybe ok on a mountain bike, and maybe even ok coming down on a gravel bike, but going up with loaded bikepacking bags we were pushing all the way!

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A fantastic gravel track to the old chapel

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Frequently Asked Questions

How many no-traffic gravel bike trails are available around Allt Rhyd Y Groes National Nature Reserve?

There are 7 dedicated no-traffic gravel bike trails featured in this guide for the Allt Rhyd Y Groes National Nature Reserve area. These routes offer a fantastic way to explore the region's natural beauty away from vehicular traffic.

What kind of terrain can I expect on these no-traffic gravel bike trails?

The terrain around Allt Rhyd Y Groes National Nature Reserve is diverse and challenging. You'll encounter sessile oak woodlands, steep gorges, craggy heathland, and grasslands. Many routes utilize forest roads, which are generally suitable for gravel bikes, but be prepared for varied surfaces and significant elevation changes. The region is known for its dramatic topography.

Are there any challenging no-traffic gravel routes for experienced riders?

Yes, most of the no-traffic gravel routes in this guide are rated as 'difficult' due to significant elevation gain and distance. For instance, the The Towy Bridge Inn – View of Llyn Brianne loop from RSPB Gwenffrwd-Dinas covers over 65 km with more than 1300 meters of climbing, offering a substantial challenge for experienced gravel cyclists.

Can I find any circular no-traffic gravel bike routes?

Absolutely. Many of the routes are designed as loops, allowing you to start and finish at the same point. For example, the Llyn Brianne Dam – The Towy Bridge Inn loop from Pwll Yr Hyddod is a challenging 28 km circular route that offers stunning views and a great workout.

What natural features or viewpoints can I see along these routes?

The region is rich in natural beauty. You can expect to see tumbling streams, the Afon Pysgotwr Fawr river, and the dramatic Pwll Uffern, a cascading waterfall. The routes often pass through ancient sessile oak woodlands and offer expansive views over the diverse habitats of the reserve, including craggy heathland and grasslands. Keep an eye out for buzzards and red kites overhead!

Are there any family-friendly or easier no-traffic gravel routes?

While most routes in this guide are rated as 'difficult' due to their length and elevation, the concept of 'no traffic' makes them safer for families with older, more experienced children. For a shorter, though still challenging, option, consider the Llyn Brianne Dam – The Towy Bridge Inn loop from Pwll Yr Hyddod at just under 29 km. However, beginners should be aware of the significant climbs involved.

Is the Allt Rhyd Y Groes area suitable for gravel biking with dogs?

The extensive network of forest roads and quiet trails makes the area generally suitable for cycling with well-behaved dogs, provided they are accustomed to longer rides and varied terrain. Always ensure your dog is under control, especially in areas with wildlife or livestock, and be mindful of local regulations regarding dogs in nature reserves. Remember to carry enough water for both yourself and your dog.

What is the best time of year to go gravel biking in Allt Rhyd Y Groes National Nature Reserve?

Spring and autumn are often ideal. In spring, the woodlands are vibrant with bluebells and other wildflowers, and the weather is generally milder. Autumn offers spectacular foliage. Summer can be pleasant, but be prepared for potentially warmer temperatures. Winter riding is possible, but trails may be wet, muddy, or icy, requiring appropriate gear and caution.

Are there any amenities like pubs or cafes along these no-traffic routes?

The routes are primarily through remote natural landscapes, so amenities directly on the trails are limited. However, some routes, like the The Towy Bridge Inn – View of Llyn Brianne loop from RSPB Gwenffrwd-Dinas, are named after or pass near establishments like The Towy Bridge Inn, which could offer a welcome stop. It's always advisable to carry sufficient food and water, and check opening times for any planned stops in advance.

What do other gravel bikers enjoy most about the no-traffic routes in Allt Rhyd Y Groes National Nature Reserve?

The komoot community highly rates the gravel biking experience here, with an average score of 4.7 stars. Reviewers often praise the profound sense of tranquility, the challenging climbs rewarded with breathtaking views, and the opportunity to immerse oneself in the diverse natural habitats away from traffic. The dramatic landscapes and rich biodiversity are frequently highlighted as major draws.

How long do these no-traffic gravel bike trails typically take to complete?

The duration varies significantly depending on the route length, elevation, and your fitness level. For example, a longer route like the The Towy Bridge Inn – Llyn Brianne Dam loop from Cilycwm, at over 60 km with substantial climbing, can take around 4.5 to 5 hours of active cycling. Shorter, but still challenging, routes like the Old Drovers' Road to Tregaron – Capel Soar y Mynydd loop from Cefn Fannog (38 km) might take 2.5 to 3 hours.

Most popular routes around Allt Rhyd Y Groes National Nature Reserve

MTB Trails around Allt Rhyd Y Groes National Nature Reserve

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