Banwen Gwys & Swansea Valley loop from Dan-yr-Ogof — Bannau Brycheiniog (Brecon Beacons) National Park
Banwen Gwys & Swansea Valley loop from Dan-yr-Ogof — Bannau Brycheiniog (Brecon Beacons) National Park
3.0
(1)
1
riders
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
Start point
Parking
Get Directions
6.24 km
Highlight • Mountain Pass
Tip by
18.8 km
Highlight (Segment) • Trail
Tip by
26.5 km
End point
Parking
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
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
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This route was planned by komoot.
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.
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.
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.
Yes, as the name suggests, this is a circular loop route, meaning you will finish back at your starting point near Dan-yr-Ogof.
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.
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.
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.
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.
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.
Yes, the route also passes through sections of the Hedreladus, Show cave, and Black Path.
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.
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