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Routes
Mountain biking trails
United Kingdom
Wales
South Wales
Llywel

Usk Reservoir and Glasfynydd Forest loop

Easy

4.7

(6)

24

riders

Usk Reservoir and Glasfynydd Forest loop

00:59

11.9km

160m

Mountain biking

Embark on an easy mountain biking adventure through the Usk Reservoir and Glasfynydd Forest loop. This route spans 7.4 miles (11.9 km) and involves a gentle climb of 517 feet (157 metres), typically completed in about 58 minutes. As you ride, you'll discover a peaceful, scenic experience, with the trail…

Last updated: April 23, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Brecon Beacons National Park

Waypoints

A

Start point

Parking

Get Directions

1

1.69 km

View of the Reservoir in Bannau Brycheiniog National Park

Highlight • Natural Monument

Rap up warm, wind off reservoir pretty cold.

Tip by

2

3.21 km

Usk Reservoir

Highlight • Trail

A brilliant track around the reservoir. Doable on on most bikes with 35mm+ wheels.

Tip by

B

11.9 km

End point

Parking

Loading

Way Types & Surfaces

Way Types

7.96 km

3.86 km

Surfaces

6.55 km

2.31 km

1.56 km

1.41 km

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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 (380 m)

Lowest point (280 m)

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Weather

Powered by Foreca

Tuesday 7 July

27°C

10°C

0 %

Additional weather tips

Max wind speed: 10.0 km/h

to get more detailed weather forecasts along your route

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Frequently Asked Questions

What is the terrain like on the Usk Reservoir and Glasfynydd Forest loop?

The trail is mostly a level, wide, stoned track that circles the Usk Reservoir. You'll encounter various surfaces including unpaved paths, asphalt, paved sections, and gravel. While generally smooth, some sections can get muddy after rain. There are a few short, sharp climbs, but overall it's considered an easy ride.

Is this trail suitable for beginner mountain bikers?

Yes, it's an excellent choice for beginners! The trail is rated as easy and is suitable for all skill and fitness levels. Its technical difficulty is very low (S0-S1), making it a great introduction to mountain biking.

What kind of views can I expect along the route?

You'll be treated to spectacular panoramic views throughout the ride. The route offers clear vistas of the dramatic Carmarthen Fans and the distant Black Mountains across the expansive Usk Reservoir. The surrounding Glasfynydd Forest also adds to the natural beauty.

Are dogs allowed on the trail?

Yes, the Usk Reservoir and Glasfynydd Forest loop is dog-friendly. However, as it's a shared path for cyclists and walkers within Bannau Brycheiniog National Park, please ensure your dog is kept under control, preferably on a leash, to respect other users and wildlife.

Where can I park for the Usk Reservoir and Glasfynydd Forest loop?

There is a dedicated car park available at the Usk Reservoir, which serves as the main trailhead for this loop. It's conveniently located for easy access to the start of your ride.

Do I need a permit or pay an entrance fee to access the trail or Bannau Brycheiniog National Park?

No, you do not need a permit or have to pay an entrance fee to ride this trail or to enter Bannau Brycheiniog National Park. Access to the park and its trails, including this loop, is generally free.

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

The trail can be enjoyed year-round, but spring and autumn offer particularly pleasant conditions with vibrant foliage or blooming wildflowers. Summer is also great, but be prepared for more visitors. Winter rides are possible, but sections can become muddy, so appropriate tires are recommended.

What type of bike is best suited for this trail?

Most bikes equipped with 35mm or wider tires will be suitable for this trail. Given its predominantly wide, stoned track surface, a mountain bike or a gravel bike would be ideal for comfort and traction, especially if it's wet.

Are there any picnic spots or facilities along the way?

Yes, there are picnic tables conveniently placed along the route. These offer ideal spots to pause, rest, and enjoy the attractive views of the reservoir and surrounding landscape.

Does the trail intersect with any other well-known paths?

Yes, the route also passes through sections of the Cycle across the Beacons trail.

What are the main highlights to look out for on the loop?

The primary highlights include the expansive Usk Reservoir itself, and the stunning View of the Reservoir in Bannau Brycheiniog National Park, offering panoramic vistas of the surrounding mountains.

Nearby routes

Moderate

4.6

703

The Gap — The Brecon Beacons National Park

03:15h

35.7km

700m

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