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United Kingdom
Wales
South Wales
Carmarthenshire

Allt Rhyd Y Groes National Nature Reserve

The best gravel rides around Allt Rhyd Y Groes National Nature Reserve

4.5

(2)

82

riders

7

rides

Gravel biking around Allt Rhyd Y Groes National Nature Reserve offers diverse landscapes and challenging terrain in rural Carmarthenshire, Wales. The region is characterized by ancient sessile oak woodlands clinging to steep gorges, carved by rivers like the Afon Pysgotwr Fawr and River Towy. Riders can expect a mix of forest doubletrack, rocky moorland descents, and wider gravel tracks, providing varied conditions suitable for gravel bikes. The landscape includes demanding climbs that lead to panoramic views of the surrounding countryside.

Last updated: July 3, 2026

3

riders

#1.

View of Llyn Brianne – Llyn Brianne Dam 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

MTB Trails around Allt Rhyd Y Groes National Nature Reserve

Hiking around Allt Rhyd Y Groes National Nature Reserve

Cycling around Allt Rhyd Y Groes National Nature Reserve

Road Cycling Routes around Allt Rhyd Y Groes National Nature Reserve

Running Trails 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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Largest man made lake in mid wales

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Perfect fire trail gravel road, take in the views as you head down to the road that hugs the edge of the reservoir

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Frequently Asked Questions

How many gravel bike trails are available in Allt Rhyd Y Groes National Nature Reserve?

There are 7 gravel bike routes available around Allt Rhyd Y Groes National Nature Reserve. The network offers options primarily for experienced riders, with 6 difficult routes and 1 moderate route.

What kind of terrain can I expect on the gravel bike trails?

You can expect a diverse range of terrain, from forest doubletrack and rocky moorland descents to wider gravel tracks. The Welsh landscape here is known for its rocky rather than muddy gravel roads, providing good riding conditions. The routes often feature demanding climbs leading to panoramic views.

Are there any waterfalls or scenic viewpoints along the gravel bike trails?

Yes, the reserve is rich in natural beauty. A significant attraction is Pwll Uffern, a cascading waterfall that offers a scenic spot. You'll also find dramatic sessile oak woodlands clinging to steep gorges carved by rivers like the Afon Pysgotwr Fawr. The Old Drovers' Road to Tregaron – Capel Soar y Mynydd loop from Cefn Fannog offers rewarding vistas.

What natural landscapes will I see while gravel biking in the area?

The reserve boasts ancient sessile oak woodlands, steep gorges, and flowing rivers. Beyond the woodlands, you'll traverse rocky heathland, grasslands, and bogs, each supporting unique flora and fauna. The demanding terrain often leads to extensive views of the surrounding Carmarthenshire countryside.

Is there parking available for gravel bikers near Allt Rhyd Y Groes National Nature Reserve?

While specific designated gravel biking parking areas are not detailed, access points to the reserve and surrounding trails typically have limited parking. It's advisable to check local information or tour starting points for the most convenient parking options.

Can I reach Allt Rhyd Y Groes National Nature Reserve by public transport?

Public transport options directly to the heart of Allt Rhyd Y Groes National Nature Reserve are limited due to its rural location. The nearest town with more comprehensive public transport links is Llandovery. From there, you might need to consider local taxi services or cycling the remaining distance to access the trails.

Are there places to eat or stay near the gravel biking routes?

Yes, the nearby town of Llandovery offers various options for cafes, pubs, and accommodation. For example, the The Towy Bridge Inn – Llyn Brianne Dam loop from Cilycwm passes near The Towy Bridge Inn, which could be a good stop. It's recommended to check opening times and availability in advance, especially in rural areas.

Are the gravel trails suitable for families or beginners?

The gravel biking routes around Allt Rhyd Y Groes National Nature Reserve are primarily rated as difficult, with only one moderate route available. This suggests the terrain and elevation gains may be challenging for beginners or younger family members. Riders should have some experience with demanding climbs and varied off-road conditions.

Can I bring my dog on the gravel trails?

Many trails in National Nature Reserves and surrounding areas in Wales are dog-friendly, provided dogs are kept under control, especially near livestock or sensitive wildlife habitats. It's always best to check specific signage at trailheads for any local restrictions or requirements within Allt Rhyd Y Groes National Nature Reserve to ensure a responsible visit.

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

The Welsh landscape, with its rocky rather than muddy gravel roads, generally provides good riding conditions year-round. However, spring and autumn offer pleasant temperatures and stunning scenery with blooming flora or vibrant foliage. Winter can be challenging due to shorter daylight hours and potentially harsher weather, while summer can be ideal, though trails might be busier.

What do other gravel bikers say about the area?

The gravel biking routes around Allt Rhyd Y Groes National Nature Reserve are highly rated by the komoot community, with an average score of 4.7 stars from over 3 reviews. Riders often praise the challenging yet rewarding terrain, the dramatic natural beauty of the ancient woodlands and gorges, and the panoramic views encountered on the climbs.

Are there any circular gravel bike routes available?

Yes, several routes are designed as loops, allowing you to start and finish in the same location. An example is the Old Drovers' Road to Tregaron – Capel Soar y Mynydd loop from Cefn Fannog, which offers a challenging circular journey through varied landscapes.

Most popular routes around Allt Rhyd Y Groes National Nature Reserve

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