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United Kingdom
Wales
South Wales
Rhondda Cynon Taf

St Gwynno Forest

The best traffic-free bike rides around St Gwynno Forest

4.3

(9)

109

riders

14

rides

Gravel biking around St Gwynno Forest offers a network of no traffic gravel bike trails through diverse landscapes. The region is characterized by mixed woodlands, hilly terrain, and several reservoirs, providing varied scenery for cyclists. Extensive forestry roads and ancient Roman roads form the basis of many routes, offering both challenging climbs and enjoyable descents. Panoramic viewpoints across the Brecon Beacons and the Rhondda Valley are accessible from various high points within the forest.

Best no traffic gravel bike trails…

Last updated: July 6, 2026

4.5

(2)

3

riders

#1.

Waterfall – Nant Glydach Reservoir and Dam loop from Llanwonno

13.7km

00:57

240m

230m

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Moderate

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 St Gwynno Forest

Traffic-free bike rides around St Gwynno Forest

Traffic-free bike rides around St Gwynno Forest

Tips from the Community

Richard
April 18, 2026, Daerwynno Outdoor Centre and Caban Guto

Cracking Cafe open, Sat Sun and Wed year round.

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Peaceful route. Opportunities to stop at Afan Argoed country park and the old Station at Cymmer.

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Jo
October 8, 2025, Pontsticill Reservoir

lovely . ( no phone signal ) bring yourself a drink and enjoy the view

1

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“Base” Good coffee/food stop.

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Fantastic chill out zone.

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Great place great view right next door to the zip world and the Afan mountain bike trails.

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the lower reservoir has a nice flat road next to it, a welcome relief after the lumpy roads that lead to it from either direction.

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0

Great views and a very large plug hole at the end of the Dam

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Frequently Asked Questions

How many no-traffic gravel bike trails are available in St Gwynno Forest?

Our guide features over a dozen dedicated no-traffic gravel bike trails around St Gwynno Forest. These routes are carefully selected to offer peaceful rides away from busy roads, utilizing quiet country lanes and forestry tracks perfect for gravel biking.

What kind of terrain can I expect on the gravel bike trails in St Gwynno Forest?

The trails in St Gwynno Forest primarily feature gravel fireroads and forestry roads, offering a mix of challenging climbs and descents. You'll encounter varied surfaces, from well-maintained tracks to more rugged sections, all designed to keep you away from vehicle traffic. The region is renowned for its diverse landscapes, including mixed woodlands and expansive viewpoints.

Are there any family-friendly no-traffic gravel routes in St Gwynno Forest?

While many of the routes in this guide are rated moderate to difficult, offering significant climbs and distances, some sections or shorter loops within the forest might be suitable for families with older, more experienced children. For example, the Llanwonno Forest Trail is mentioned as a suitable gravel-adventure bike trail, which could be a good starting point for exploring shorter, less strenuous options.

Can I bring my dog on the gravel bike trails in St Gwynno Forest?

Many of the trails in St Gwynno Forest are suitable for dogs, especially those on forestry roads and wider tracks. However, it's always best to keep your dog on a lead, especially near livestock or wildlife, and to check local signage for any specific restrictions within certain areas of the forest or nature reserves. Ensure your dog is fit enough for the distance and elevation of your chosen route.

What natural features or viewpoints can I see along the no-traffic gravel routes?

St Gwynno Forest offers stunning natural beauty and panoramic views. You can expect to see mixed woodlands, and several routes pass by water features like the Nant Glydach Reservoir. Notable viewpoints include the Bryn Du Climb from Aberdare and the Blaenllechau Climb. On clear days, you might even catch a view of the Brecon Beacons or the Bristol Channel. Don't miss the picturesque Waterfall along some routes.

Are there any circular no-traffic gravel routes in the area?

Yes, many of the gravel routes in St Gwynno Forest are designed as circular loops, allowing you to start and finish at the same point without retracing your steps. An example is the Waterfall – Nant Glydach Reservoir and Dam loop from Llanwonno, which offers a scenic circular ride through the forest.

What is the difficulty level of the no-traffic gravel bike trails?

The no-traffic gravel bike trails in St Gwynno Forest range from moderate to difficult. Out of the 14 routes in this guide, 6 are rated moderate and 8 are difficult. This means you can expect significant elevation changes and longer distances, making them suitable for riders with a good level of fitness and gravel biking experience. There are no easy routes listed in this specific guide.

What do other gravel bikers enjoy most about riding in St Gwynno Forest?

The komoot community highly rates the gravel biking experience in St Gwynno Forest, with an average score of 4.4 stars. Reviewers often praise the extensive network of quiet forestry roads and gravel tracks that provide a true escape from traffic. The challenging climbs, rewarding panoramic views, and the diverse natural scenery, including mixed woodlands and waterfalls, are frequently highlighted as major draws.

Are there any historical or cultural landmarks along the routes?

Beyond its natural beauty, St Gwynno Forest holds historical significance. While not directly on every gravel route, the ancient St Gwynno Church, dating back to the 6th century, is a notable landmark in the area. It's known for its early stone crosses and as the burial place of the legendary runner Guto Nyth Brân, adding a layer of cultural interest to your visit.

Which no-traffic gravel route offers the best views of the surrounding region?

For expansive views, consider routes that climb to higher elevations. The Rhigos Mountain Fire Roads – View of Treherbert Basin loop from Ton Pentre is a challenging route that offers stunning vistas. The region is known for panoramic viewpoints that can include the Brecon Beacons and even the Bristol Channel on clear days.

Is there public transport access to the St Gwynno Forest gravel trails?

While St Gwynno Forest is primarily accessed by car, some nearby towns like Ton Pentre, Treherbert, and Merthyr Tydfil, which serve as starting points for several routes, do have public transport links. It's advisable to check local bus and train schedules to plan your journey, especially if you intend to bring your bike on public transport.

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

Yes, for experienced riders seeking a longer challenge, St Gwynno Forest offers several difficult routes. The Pontrhydyfen Viaduct – Afan Argoed Bridge loop from Ton Pentre is a demanding 64.5 km ride with over 1100 meters of elevation gain, providing a significant adventure away from traffic. Another option is the Talybont Reservoir – Pontsticill Reservoir loop from Merthyr Tydfil, spanning over 52 km.

Most popular routes around St Gwynno Forest

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