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Wales
South Wales

Tonna

The best MTB trails around Tonna

4.7

(242)

6,217

riders

102

rides

Mountain biking around Tonna offers access to a network of trails within a landscape characterized by dense forests, river valleys, and former industrial heritage. The region's terrain includes varied elevations, from gentle slopes to more challenging climbs, often featuring purpose-built mountain bike trails. Riders can expect to navigate through woodlands and open areas, with routes that sometimes incorporate viaducts and forest streams. This area provides a diverse environment for mountain biking, catering to different skill levels.

Best mountain bike trails…

Last updated: April 22, 2026

5.0

(9)

108

riders

#1.

Big Dipper – Penhydd Trail – Pontrhydyfen Viaduct loop from Neath

34.9km

02:57

700m

700m

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Moderate

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

Moderate
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Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

Easy

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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Tips from the Community

Dan
June 22, 2025, Big Dipper – Penhydd Trail

Doable on a gravel bike in the dry. Foot down once Lol.

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“Base” Good coffee/food stop.

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It's currently close, like most of the bike park (June 2025).

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You can enjoy lovely views of the town and Afon Valley from this high up viewpoint on Pontrhydyfen Viaduct. The viaduct itself was build in 1898 by the Port Talbot Railway.

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A lovely viewpoint over the lower village and across the hillside and valleys. Another great moment on this trail to take a moment out and appreciate nature. Panoramic view is all around which are just breathtaking. The track is wide enough if you do want to stop here and put your bike to one side to appreciate the views, to not being in anyone’s way if anyone is coming down the trail from above.

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Beautiful missy and green section of trail which crosses a stream that goes down the hillside. Lovely to take a moment on the ride and appreciate nature. Note: bridge does have grip tape on but still May be slightly slippery in the wet or winter conditions.

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Check out the Afan Valley Bike Shed - great helpful staff and they sell a selection of souvenirs - tees, hoodies, mud guards & stem caps (always good to support the local shop).

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Adie
February 6, 2023, Pontrhydyfen Viaduct

Pontrhydyfen is a small former coal mining community at the confluence of the River Afan and the Afon Pelenna. It is distinguished by two large 19th-century bridges that span the valley: a railway viaduct (the red bridge) and a former aqueduct, known as Y Bont Fawr ("The Big Bridge").

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Frequently Asked Questions

How many mountain bike trails are available around Tonna?

There are over 100 mountain bike trails around Tonna, offering a wide range of options for different skill levels. This includes 26 easy trails, 64 moderate trails, and 14 difficult trails.

Are there easy mountain bike trails suitable for beginners in Tonna?

Yes, Tonna offers several easy mountain bike trails perfect for beginners. An example is the Afan Forest Park Trail – Y Wal & Graveyard Trail loop from Pont-rhyd-y-fen, which is 7.1 miles (11.5 km) long and takes about 1 hour 11 minutes to complete.

What is the typical length and duration of mountain bike trails around Tonna?

Trail lengths vary significantly. For instance, the Big Dipper – Penhydd Trail – Pontrhydyfen Viaduct loop from Neath is 21.7 miles (34.9 km) and takes nearly 3 hours, while the Ford Crossing – Y Wal & Graveyard Trail loop from Pont-rhyd-y-fen is 11.5 miles (18.5 km) and typically takes around 1 hour 45 minutes.

Are there advanced mountain bike routes for experienced riders in Tonna?

Yes, Tonna provides challenging routes for experienced mountain bikers. The region's terrain includes more demanding climbs and technical sections, particularly within areas like Afan Forest Park. While specific 'difficult' routes are available, many moderate trails also offer advanced sections.

What do other mountain bikers enjoy most about Tonna's trails?

The mountain bike trails around Tonna are highly rated by the komoot community, with an average score of 4.7 stars from over 240 reviews. Riders often praise the extensive forest trails, varied terrain, and purpose-built routes like the Y Wal Trail, which offer a diverse and engaging experience.

Is parking available at the trailheads in Tonna?

Yes, parking is generally available at key access points and visitor centers, especially around popular areas like Afan Forest Park. The Afan Forest Park Visitor Centre is a good example of a location with dedicated parking facilities.

Can I access mountain bike trails in Tonna using public transport?

While some areas might be reachable by public transport, many trailheads and more remote sections are best accessed by car for convenience. Planning your route in advance and checking local bus services is recommended if relying on public transport.

Are there any interesting landmarks or attractions to see along the mountain bike trails?

Yes, the trails often pass by or near interesting landmarks. You might encounter the Afan Argoed Bridge, or natural features like Melincourt Falls and Brombil Reservoir. The Pontrhydyfen Viaduct is also a notable sight on some routes.

What is the best time of year to go mountain biking in Tonna?

Spring and autumn generally offer the best conditions for mountain biking in Tonna, with milder temperatures and vibrant scenery. Summer can also be excellent, though trails may be busier. Winter riding is possible but requires appropriate gear for potentially wet and muddy conditions.

Are there circular mountain bike routes in Tonna?

Yes, many of the mountain bike trails around Tonna are designed as circular routes, allowing riders to start and finish at the same point. An example is the Bridge Over Forest Stream – Y Wal & Graveyard Trail loop from Pont-rhyd-y-fen, which offers a scenic loop through the forest.

What should I wear for mountain biking in Tonna during autumn?

In autumn, layers are key. Expect cooler temperatures and potential for rain. Waterproof and windproof outer layers are advisable, along with moisture-wicking base layers. Gloves, a helmet, and appropriate mountain biking shoes are essential for comfort and safety.

Are there any trails that pass by a pub or cafe for refreshments?

While specific trails may not lead directly to a pub, many routes are located within a reasonable distance of villages or towns like Pont-rhyd-y-fen or Neath, where you can find pubs and cafes for refreshments after your ride. The Afan Forest Park Visitor Centre also offers facilities.

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