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Routes
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United Kingdom
Wales
South Wales
Rhondda Cynon Taf
Ferndale

Rhondda Fach and Lluest-wen Reservoir Loop

Hard

3

runners

Rhondda Fach and Lluest-wen Reservoir Loop

02:23

21.1km

380m

Running

This difficult 13.1-mile jogging loop around Rhondda Fach and Lluest-wen Reservoir offers varied terrain, historical sights, and panoramic v

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

9.41 km

Lluest-wen Reservoir North Shore Trail

Highlight • Trail

Lovely views along the North shore of the Lluest-wen Reservoir at the top of the Rhondda Fach Valley.

Tip by

2

11.6 km

The climb towards Bryn Llechwenddiddos and Bryn Gelli rewards you with great views of the reservoir.

Tip by

3

12.0 km

Lluest-wen Reservoir Dam Wall

Highlight • Structure

Lluest-wen Reservoir was constructed in 1898, but came to national attention in 1969 when a major leak caused an evacuation of residents down-valley while emergency repair work was carried out. …

Tip by

B

21.1 km

End point

Parking

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Way Types & Surfaces

Way Types

12.3 km

6.18 km

1.78 km

776 m

144 m

Surfaces

6.67 km

6.15 km

6.11 km

2.10 km

113 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 (470 m)

Lowest point (220 m)

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Weather

Powered by Foreca

Tuesday 19 May

14°C

9°C

44 %

Additional weather tips

Max wind speed: 28.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the terrain like on the Rhondda Fach and Lluest-wen Reservoir Loop?

The terrain is quite varied, offering a mix of surfaces. You'll encounter sections of tarmac, concrete paths, forestry roads, and gravel paths. However, be prepared for unpaved, grassy, and rocky areas, which can be uneven underfoot and potentially muddy, especially on steeper sections like Graze Lane.

How long does it typically take to jog this loop?

This jogging route is approximately 21.1 kilometers long and generally takes around 2 hours and 22 minutes to complete. However, this can vary based on your fitness level and how often you stop to enjoy the scenery.

Is the Rhondda Fach and Lluest-wen Reservoir Loop suitable for beginners?

While some initial parts along the river from Maerdy are relatively easy, the full loop, particularly the ascent to Lluest-wen Reservoir, is classified as difficult for jogging. It includes steep sections, such as Graze Lane, which require good fitness. It's not recommended for beginner joggers looking for an easy outing.

What can I see along the route?

You'll enjoy picturesque views of two reservoirs, attractive woodland, grassland, and impressive waterfalls along the River Rhondda Fach. Key points of interest include the Lluest-wen Reservoir North Shore Trail, the View of Bryn Gelli Reservoir and Wind Farm, and the Lluest-wen Reservoir Dam Wall. The trail also passes historical sites like old tramlines, the Castell Nos filter house, and the remains of a medieval Welsh castle.

Does the trail intersect other well-known paths?

Yes, the route incorporates sections of several other paths. You'll find it uses parts of the National Cycle Network Route 47, the Rhondda Fach Trail, and the Cychoedd-a-Dolenni Loops & Links.

Is the Rhondda Fach and Lluest-wen Reservoir Loop dog-friendly?

Yes, dogs are generally welcome on this trail. However, given the varied terrain, including potentially rocky and muddy sections, and the presence of livestock in some areas, it's advisable to keep dogs on a leash, especially around the reservoirs and open fields.

What is the best time of year to jog this route?

Spring and autumn are often ideal for jogging this loop, offering pleasant temperatures and beautiful scenery. Summer can be enjoyable, but be prepared for warmer conditions. Winter jogging is possible, but the trail can become very muddy and slippery, especially on steep inclines like Graze Lane, requiring appropriate footwear and caution.

Do I need a permit or is there an entrance fee for this trail?

No, there are no specific permits or entrance fees required to access and jog the Rhondda Fach and Lluest-wen Reservoir Loop. It's freely accessible to the public.

Where can I park to access the trail?

While specific parking details are not provided, the trail is often accessed from areas around Maerdy. Look for public parking options in or near Maerdy, which serves as a common starting point for routes in the Rhondda Fach valley.

Are there any cafes or pubs near the trail for refreshments?

The trail passes through or near Maerdy, which is a community that may offer local amenities. It's a good idea to check for cafes or pubs in Maerdy or nearby villages before your visit, as options can vary.

What makes this trail particularly notable?

This trail stands out for its blend of scenic beauty, historical significance, and integration with other routes. It offers tranquil reservoir views, flowing rivers, and panoramic vistas, alongside remnants of the coal mining industry, the ancient Castell Nos castle, and the dramatic history of Lluest-wen Reservoir itself. It also incorporates parts of the Coed Morgannwg Way and National Cycle Network Route 47.

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