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United Kingdom
Wales
South Wales
Tawe-Uchaf

Banwen Gwys & Swansea Valley loop from Dan-yr-Ogof — Bannau Brycheiniog (Brecon Beacons) National Park

Routes
Mountain biking trails
United Kingdom
Wales
South Wales
Tawe-Uchaf

Banwen Gwys & Swansea Valley loop from Dan-yr-Ogof — Bannau Brycheiniog (Brecon Beacons) National Park

Moderate

3.0

(1)

1

riders

Banwen Gwys & Swansea Valley loop from Dan-yr-Ogof — Bannau Brycheiniog (Brecon Beacons) National Park

02:37

26.5km

730m

Mountain biking

This moderate 16.5-mile mountain bike loop from Dan-yr-Ogof explores the Banwen Gwys and Swansea Valley in Bannau Brycheiniog National Park.

Last updated: February 26, 2026

Tips

Includes a very steep uphill segment

You may need to push your bike.

After 22.0 km for 1.46 km

Waypoints

A

Start point

Parking

Get Directions

1

6.24 km

Bridleway Over Black Mountain

Highlight • Mountain Pass

This bridleway crossing of the Black Mountain is a tough one; expect plenty of hike-a-bike and many boggy areas and streams to cross too.

Tip by

2

18.8 km

NCN 43 Swansea Valley Railway Path

Highlight (Segment) • Trail

NCN43 follows old railways lines, riverbanks and canals from Swansea to Clydach. This section follows an old railway line, it's flat and gravelled, easy riding but pretty and no cars.

Tip by

B

26.5 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

9.47 km

8.56 km

3.37 km

2.14 km

1.68 km

1.23 km

Surfaces

18.0 km

5.74 km

2.21 km

455 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (490 m)

Lowest point (90 m)

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Weather

Powered by Foreca

Saturday 18 July

22°C

10°C

9 %

Additional weather tips

Max wind speed: 16.0 km/h

to get more detailed weather forecasts along your route

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This route was planned by komoot.

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Frequently Asked Questions

How long should I expect to spend mountain biking this loop?

This mountain bike loop is approximately 26.5 km (16.5 miles) long. Komoot estimates the average riding time to be around 2 hours and 37 minutes, but this can vary based on your fitness level, the weather, and how often you stop to enjoy the views.

What is the difficulty level of this mountain bike loop?

This loop is rated as moderate. While specific detailed descriptions of this exact loop's terrain are limited, mountain biking in the Swansea Valley often involves a mix of surfaces. Expect some significant climbs that might require effort, but are often on wider fire roads. You may also encounter natural, flowy sections and potentially some technical or rocky descents. It's a rewarding challenge without being overly extreme.

Where can I park for the Banwen Gwys & Swansea Valley loop?

The loop starts from Dan-yr-Ogof, which is a well-known location in the Bannau Brycheiniog (Brecon Beacons) National Park. You should be able to find parking facilities there, likely associated with the Dan-yr-Ogof Showcaves attraction. Always check local signage for parking regulations and fees.

Is this a circular mountain bike route?

Yes, as the name suggests, this is a circular loop route, meaning you will finish back at your starting point near Dan-yr-Ogof.

What is the terrain like on this mountain bike trail?

The terrain is varied, typical for mountain biking in this region. You can expect a mix of surfaces, from wider tracks and fire roads, especially on climbs, to more natural, potentially rocky or technical sections. Some parts might resemble riverbeds, and you'll likely encounter both on and off-road sections, possibly including old railway lines or canal paths as found in the broader Swansea Valley.

What can I see along the route?

The route offers stunning natural beauty, including scenic views of the Brecon Beacons National Park and the Swansea Valley. You'll pass by the Bridleway Over Black Mountain and sections of the NCN 43 Swansea Valley Railway Path. The area also has a rich industrial past, so you might spot historical elements woven into the landscape.

Is the Banwen Gwys & Swansea Valley loop dog-friendly?

Generally, mountain biking trails in the Brecon Beacons National Park are dog-friendly, but it's crucial to keep your dog under close control, especially around livestock. Given the varied terrain and potential for wildlife, a leash is highly recommended for their safety and to respect other trail users and the environment.

What is the best time of year to mountain bike this loop?

Spring and autumn are often ideal for mountain biking in the Brecon Beacons, offering pleasant temperatures and beautiful scenery. May/June can be particularly scenic with rhododendron forests. While possible in winter, be prepared for potentially wet and challenging conditions, as Welsh trails can be technical even when wet. Always check weather forecasts before you go.

Do I need a permit or pay an entrance fee for this mountain bike route?

No, you do not need a specific permit or to pay an entrance fee to ride this mountain bike loop within the Bannau Brycheiniog (Brecon Beacons) National Park. However, parking at the Dan-yr-Ogof trailhead may incur a fee.

Does the trail intersect other well-known paths?

Yes, the route also passes through sections of the Hedreladus, Show cave, and Black Path.

Are there facilities like cafes or pubs near the trailhead?

Given that the loop starts from Dan-yr-Ogof, which is a popular tourist attraction (Dan-yr-Ogof Showcaves), you can expect to find facilities such as cafes or possibly pubs in the immediate vicinity or nearby villages in the Swansea Valley for refreshments before or after your ride.

Nearby routes

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The Gap — The Brecon Beacons National Park

03:15h

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