Rhondda Fach and Lluest-wen Reservoir Loop
Rhondda Fach and Lluest-wen Reservoir Loop
3
runners
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
Start point
Parking
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9.41 km
Highlight • Trail
Tip by
11.6 km
Highlight • Lake
Tip by
12.0 km
Highlight • Structure
Tip by
21.1 km
End point
Parking
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
Highest point (470 m)
Lowest point (220 m)
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Weather
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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.