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Routes
Mountain biking trails
United Kingdom
Wales
South Wales
Ceredigion
Ystrad Fflur

Trans Cambrian Way and Claerwen Reservoir Loop

Hard

5.0

(1)

3

riders

Trans Cambrian Way and Claerwen Reservoir Loop

05:53

63.2km

1,300m

Mountain biking

This difficult 39.3-mile mountain biking loop in the Claerwen National Nature Reserve offers remote Welsh landscapes and reservoir views.

Last updated: February 26, 2026

Tips

Includes a segment in which cycling is not permitted

After 20.1 km for 87 m

Waypoints

A

Start point

Parking

Get Directions

1

10.5 km

Gravel track along the Claerwen Reservoir

Highlight (Segment) • Lake

Excellent quality gravel track with stunning views of the reservoir.

Tip by

2

16.6 km

The Claerwen Reservoir is the largest and the newest of the four Elan Valley Reservoirs. Once you reach the top, another "wow“ experience awaits you!

The view over the huge …

Tip by

3

24.5 km

Incredible descent with fantastic panoramic views.

Tip by

4

44.0 km

Wolf's Leap, River Irfon

Highlight • Gorge

Wolf's Leap is a deep pool along the River Irfon. It is accessed via a small path cut into the rock. At this point the river cuts through a narrow …

Tip by

5

58.4 km

View of Strata Florida

Highlight • Trail

Gravel or mountain bike best for the descent down the fire road. Best on a clear day with a few clouds for that dramatic scene,

Tip by

B

63.2 km

End point

Parking

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Way Types & Surfaces

Way Types

43.8 km

18.7 km

408 m

374 m

Surfaces

29.8 km

15.6 km

15.1 km

1.61 km

1.24 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 (530 m)

Lowest point (190 m)

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Weather

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Monday 18 May

14°C

9°C

-- %

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park to access the Trans Cambrian Way and Claerwen Reservoir Loop?

While the specific starting point for this loop isn't detailed, the wider Trans Cambrian Way often benefits from starting and ending at train stations. For the Claerwen Reservoir section, you'll typically find parking areas near the reservoir itself, though specific locations can vary. It's always a good idea to check local signage upon arrival.

Is this mountain bike route dog-friendly?

Generally, dogs are welcome on public rights of way in the Welsh countryside. However, given that parts of this route traverse remote areas and potentially farmland, it's crucial to keep dogs under close control, preferably on a lead, especially near livestock or sensitive wildlife habitats. Always follow the Countryside Code.

What's the best time of year to ride this route?

The best time to ride is typically from late spring through early autumn (May to October). During these months, you'll likely encounter more favorable weather conditions, less mud, and longer daylight hours. Winter can bring challenging conditions, including snow, ice, and very wet terrain, making many sections difficult or impassable.

Are there any permits or entrance fees required for mountain biking in the Claerwen National Nature Reserve?

No, there are generally no specific permits or entrance fees required for mountain biking on public rights of way within the Claerwen National Nature Reserve or the wider Elan Valley. However, always respect private land and adhere to any local access restrictions or signage you may encounter.

What kind of terrain can I expect on the trail?

This route offers a varied and challenging experience. You'll encounter fast gravel tracks, particularly along the Gravel track along the Claerwen Reservoir, but also quiet lanes, grassy hills, ancient ridge roads, and rocky singletrack. Be prepared for notoriously steep climbs, some exceeding 30 percent, and potentially boggy sections that might require some hike-a-bike.

What are the main points of interest or scenic views along the way?

You'll be treated to breathtaking views throughout the ride. Highlights include the stunning Gravel track along the Claerwen Reservoir, offering a peaceful ride with 'wow' views. Other notable spots are the Gravel Path Along Claerwen Reservoir, a Singletrack Descent with View of Lake and Hills, and the dramatic Wolf's Leap, River Irfon. You'll also get a View of Strata Florida.

Does this route connect with other trails?

Yes, this route incorporates sections of several other well-known paths. You'll ride along parts of the Trans Cambrian Way, the Cambrian Way, and various sections of the Strata Florida trail. It also briefly touches on the Teifi Pools Walk and Monk's Trod.

Is this route suitable for less experienced mountain bikers?

Given its 'difficult' rating, significant elevation gain (over 1300m), and varied technical terrain, this route is not recommended for beginners. It requires a good level of fitness and advanced riding skills. Less experienced riders might find the main gravel track around Claerwen Reservoir more accessible, but the full loop includes challenging sections.

Are there places to refuel or find amenities along the route?

The route traverses very remote and sparsely populated areas, particularly around the Claerwen Reservoir. Amenities like cafes, pubs, or shops are extremely limited, if not non-existent, directly on the trail. You should plan to be entirely self-sufficient with food, water, and spares for the duration of your ride.

Is the Trans Cambrian Way and Claerwen Reservoir Loop a circular route?

Yes, as indicated by its name, this specific komoot tour is designed as a loop, bringing you back to your starting point. This makes it convenient for day trips without needing shuttle arrangements.

What essential gear should I bring for this mountain bike adventure?

Given the route's remote and challenging nature, essential gear includes a well-maintained mountain bike (preferably full suspension), a helmet, appropriate clothing for changeable Welsh weather, plenty of water and snacks, a repair kit (spare tubes, pump, multi-tool), a first-aid kit, navigation tools (like a GPS device or the komoot app with offline maps), and a fully charged phone. Due to the remoteness, consider a power bank and emergency shelter.

Are there any specific challenges or things to be aware of when planning this ride?

Be prepared for significant remoteness; cell phone reception can be patchy or non-existent in many areas. The weather in the Cambrian Mountains can change rapidly, so pack layers. Also, some sections in the broader Claerwen area have historically had access restrictions or unclear rights of way, so be mindful of signage and potential detours. Always carry enough supplies as amenities are very sparse.

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200

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05:01h

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