4.4
(393)
3,468
hikers
6
hikes
Urban hiking trails around St Gwynno Forest offer diverse landscapes within Rhondda Cynon Taf, characterized by mixed woodlands and gentle hills. The area features several reservoirs, such as Lluest-wen Reservoir, and notable water features like Pistyll Goleu waterfall. Terrain includes varied paths, from accessible routes to those with moderate elevation gain, providing options for different fitness levels. Historical sites, including St Gwynno Church, are also integrated into the trail network.
Last updated: July 6, 2026
3.0
(1)
15
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
2
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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3.0
(1)
4
hikers
5.92km
01:45
170m
170m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.3
(3)
19
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
12
hikers
7.92km
02:04
60m
60m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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you must stop to take in the views and structure π
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Friendly cafe in high street, good coffee and crumpets βπ€ͺ
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Cefn-coed Viaduct was built in 1866 and is 770 ft (235 m) long and 120 ft (36.6 m) high. It is a rusticated-limestone structure of fifteen arches, set on a curve. The tall, slender piers and parapets are constructed with coursed irregular sized rock-faced limestone blocks
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The Cefn-coed Viaduct is the third-largest viaduct in Wales. This huge, curved structure once carried the Brecon and Merthyr Tydfil Junction Railway and is now part of the Taff Trail, which is Route 8 of the National Cycle Network that runs between Cardiff and Brecon. It offers walkers and cyclists a superb view of the Taf Fawr as it cascades over the many weirs in the valley
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Not much left of the old iron works. With a bit of time, experience and phantasy you can roughly reconstruct the old site, but without knowing the history you could as well overlook these ruins.
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Here is very little of what is left of the remains of the ironworks that put Merthyr on the map. Unable to access these now as fenced off but once was accessible
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The Rocking Stone or "Y Maen Chwyf" in Welsh is a glacial boulder remaining from the Ice Age. It formed the central point for a "Gorsedd" or "Gathering of Bards" in 1814, which was organised by stonemason, Edward Williams, known as "Iolo Morganwg". The Gorsedd Circle of smaller stones was constructed in 1849 by Evan Davies, Bardic name "Myfyr Morganwg" and has often been used for Bardic gatherings, and as a focal point for other public occasions.
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There are 5 urban hiking trails around St Gwynno Forest. Most of these, 4 to be exact, are rated as easy, with one moderate option for those looking for a slightly greater challenge.
The urban hikes around St Gwynno Forest are generally accessible, with 4 routes rated as easy. There is also one moderate route available for hikers seeking a bit more of a workout.
Yes, many of the urban trails are suitable for families. The 4 easy routes, such as the Old Bridge, Pontypridd β The Crazy Croissant Cafe loop from Pontypridd, are ideal for a leisurely family outing. These routes typically feature gentle terrain and manageable distances.
Yes, dogs are generally welcome on the urban hiking trails around St Gwynno Forest. Always keep your dog on a lead, especially in urban areas or near livestock, and remember to clean up after them. The mixed woodlands and open spaces provide a great environment for a walk with your canine companion.
Yes, all the urban hiking routes listed are circular, allowing you to start and finish at the same point. For example, you can enjoy the Cefn-coed Viaduct β Merthyr Ironworks Ruins loop from Merthyr Tydfil, which offers a convenient loop experience.
While focusing on urban areas, these trails are close to the natural beauty of St Gwynno Forest. You might encounter historical structures like the Old Bridge in Pontypridd or the Merthyr Ironworks Ruins. The wider region also features mixed woodlands and reservoirs, with some routes offering glimpses of the surrounding natural landscape.
While the urban trails themselves might not feature dramatic mountain viewpoints, the broader St Gwynno Forest area is known for its scenic vistas. Some routes may offer views of the surrounding valleys. For more expansive views, you could explore highlights like Bryn Du Climb from Aberdare or View of the Brecon Beacons from St Gwynno Forest, which are nearby.
Urban hiking around St Gwynno Forest is enjoyable year-round. Spring and autumn offer pleasant temperatures and beautiful foliage, while summer provides longer daylight hours. Even in winter, the trails are generally accessible, though appropriate footwear and clothing are recommended for potentially wet or chilly conditions.
Many of the urban trails are accessible via public transport, particularly those starting in towns like Pontypridd and Merthyr Tydfil. For instance, the St Catherine's Church β Bunch of Grapes loop from Trefforest starts near Trefforest, which has good transport links. We recommend checking local bus and train schedules for specific starting points.
Yes, parking is generally available near the starting points of these urban hikes, especially in towns like Pontypridd and Merthyr Tydfil. Look for public car parks or designated street parking areas. Always check local signage for any restrictions or fees.
Yes, being urban trails, you'll find various cafes and pubs conveniently located near the routes. For example, the Old Bridge, Pontypridd β The Crazy Croissant Cafe loop explicitly mentions a cafe, and the St Catherine's Church β Bunch of Grapes loop from Trefforest ends near a pub, offering great spots for refreshments.
The urban trails around St Gwynno Forest are highly rated by the komoot community, with an average score of 4.37 stars. Hikers often praise the accessibility, the blend of urban exploration with glimpses of nature, and the convenience of circular routes that often pass by local amenities like cafes and historical sites.


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