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United Kingdom
Wales
South Wales

Merthyr Tydfil

The best walks and hikes around Merthyr Tydfil

4.5

(5688)

53,316

hikers

60

hikes

Hikes around Merthyr Tydfil explore a landscape that blends industrial heritage with natural features. The region is characterized by river valleys, large reservoirs like Pontsticill and Llwyn-on, and extensive forests. With a portion of the area extending into the Bannau Brycheiniog National Park, the terrain offers a mix of gentle paths and more demanding routes on the surrounding hills.

Best hiking trails around Merthyr Tydfil

  • The most popular hiking route is the Pontsticill Reservoir loop from Pontsticill, a 8.4 mile (13.5 km) trail that takes around 3 hours 50 minutes to complete. The path follows the shoreline of the reservoir and runs alongside the Brecon Mountain Railway line.
  • Another top favourite among local hiking enthusiasts is the Llwyn-on Reservoir loop, an easy 3.4 mile (5.5 km) path. This is a relatively flat route that offers scenic water views and is suitable for a wide range of abilities.
  • Local hiking enthusiasts also love the Pontsarn Viaduct – Morlais Quarry loop from Merthyr Tydfil, a 8.4 mile (13.6 km) trail leading through areas of industrial heritage, often completed in about 3 hours 40 minutes.
  • Hiking around Merthyr Tydfil is defined by reservoir paths, river valleys, and forested trails that reflect the area's industrial past. The network of routes provides options for different ability levels, from easy family walks to more challenging hikes.
  • The routes in Merthyr Tydfil are highly rated by the komoot community with an average score of 4.4 stars from over 2,000 reviews. More than 15,000 hikers have used komoot to explore Merthyr Tydfil's varied terrain.

Last updated: June 23, 2026

4.3

(36)

294

hikers

#1.

Llwyn-on Reservoir loop

5.50km

01:26

40m

40m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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Easy

4.3

(9)

36

hikers

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy
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Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

Hard

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

Hard

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Tips from the Community

Sasha Taylor
June 21, 2026, Pontygwaith Bridge

Pontygwaith Bridge is a historic, Grade II-listed stone humpback bridge that spans the River Taff near Edwardsville and Treharris, south of Merthyr Tydfil, Wales. Revered for its striking architecture and its setting within the Pontygwaith Nature Reserve, the bridge stands as a prominent icon of the region's industrial heritage. 1. History and Origins Ancient Crossings: Records indicate a river crossing has existed at this precise location as far back as the 1540s. The Ironworks Connection: A wooden bridge originally stood here to carry worker traffic across the river to a small ironworks established in 1583 by Sussex ironmaster Anthony Morley. The current name, Pontygwaith, literally translates to "Bridge of the Ironworks". The 1811 Stone Build: The wooden structure was replaced in 1811 by the beautiful, durable masonry structure seen today. 2. Architectural Features According to the official Cadw Listed Buildings Report, the bridge is registered as a structure of "exceptional character" due to its distinct construction: The Arch: It features a single stone arch built with a remarkably steep rise of 4.8 metres and a wide 16.8-metre span. Materials: It was meticulously assembled using local Pennant Sandstone rubble and thin, long cut stone voussoirs across the arch ring. Restoration: The main arch was heavily repaired and reconstructed by the Mid Glamorgan County Council in 1993, earning it a prestigious commendation from the Civic Trust for historical preservation. 3. Pop Culture & The Taff Trail Today Today, the bridge serves as a major focal point along the Taff Trail (National Cycle Network Route 8). It is a highly popular stopping point for cyclists and hikers to set up a picnic or take photographs. The bridge also gained television fame when it was used as a filming location for the BBC fantasy series Merlin. It served as the exact backdrop for the "Beauty and the Beast" episode, where a character has a secret picnic with a troll directly beneath the stone archway.

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If you are lucky enough to get a nice day there are views for miles

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Pentwyn Reservoir is the smaller sister to Pontsticill Reservoir, both being separated by a causeway going towards the old Dolygaer outdoor centre. It is a very popular spot with fishermen and outdoor enthusiasts alike. The reservoir is used daily for a mix of watersports such as paddle boarding, kayaking, canoeing and raft building. It is in a beautiful setting, and you have great views north towards Pen y Fan and nice walks nearby.

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The lake attracts numerous water-loving birds, which can be observed from the bird-watching stand. It is also worth looking out for the environmental sculptures that can be found on the „Wern“ and „Willow“ trails.

Translated by Google

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Clive G
January 6, 2026, Bwlch Duwynt

This is the col between Corn Du and Craig Gwaun Taf. Not only is it a fine viewpoint, but it is also the parting of the ways. Turn right at the marker stone you will follow the crowds down to the Storey Arms, turn left to Craig Gwaun Taf and you arfe likely to have the airy path all to yourself.

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Clive G
January 6, 2026, Craig Gwaun Taf

Craig Gwaun Taf is the sheer escarpment that runs south from Corn Du, and overlooks the valley of Blaen Taf Fechan.

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Clive G
January 6, 2026, Cefn Cwm Llwch

This is the ridge route to Pen y Fan from the north. A fine route that steepens sharply near the top.

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This is the start of the climb to Pen Y Fan by the main route from Storey Arms.

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Frequently Asked Questions

Are there any easy, family-friendly walks in Merthyr Tydfil?

Yes, the area offers several gentle routes perfect for families. A great option is The Giant's Bite from Edwardsville — Taff Trail loop, an easy 4.3-mile (7 km) walk. Many of the paths around the reservoirs, such as Pontsticill and Llwyn-on, are also relatively flat and provide scenic views suitable for all ages.

Can I bring my dog on the trails around Merthyr Tydfil?

Most trails around Merthyr Tydfil are dog-friendly, but it's important to be responsible. As much of the area is within the Bannau Brycheiniog (Brecon Beacons) National Park, you'll encounter farmland with livestock. Always keep your dog on a lead in these areas. The forested paths and reservoir trails are great for walks with dogs, provided they are kept under control.

Where can I find waterfall walks near Merthyr Tydfil?

The region is known for its beautiful waterfalls, particularly within the Bannau Brycheiniog National Park. The Blaen y Glyn waterfalls on the River Caerfanell are a local highlight. For a more extensive hike, the popular Four Falls Walk is a short drive away and showcases a series of stunning cascades in the heart of 'Waterfall Country'.

Are there good circular walks available?

Absolutely. Many routes are designed as loops so you can start and end in the same place. For a moderately challenging circular route with excellent scenery, consider the View of Pontsticill Reservoir – Taf Fechan Forest Trail loop from Pontsticill. This 4.6-mile (7.5 km) trail offers a mix of forest paths and reservoir views.

What are the trails like for someone looking for a serious challenge?

For experienced hikers, Merthyr Tydfil is a gateway to the challenging peaks of the Bannau Brycheiniog. The ascent of Pen y Fan, the highest peak in South Wales, is a classic demanding hike. For a long and strenuous day out, the View of Cwm Cwmwyn Valley – Cribyn Summit loop from Pontsticill is a 13.7-mile (22 km) route that takes you into the high mountains.

How do the Taff Trail and Trevithick Trail differ?

Both trails celebrate the region's history, but offer different experiences. The Taff Trail is a 55-mile route from Cardiff to Brecon, offering a mix of riverside paths and countryside suitable for both walking and cycling. The Trevithick Trail specifically follows the path of the world's first steam-powered railway journey, providing a shorter, more focused glimpse into the area's industrial heritage.

What do other hikers enjoy most about the trails in Merthyr Tydfil?

The trails here are highly regarded by the komoot community. Hikers often praise the variety of scenery, from the tranquil paths around reservoirs like Pontsticill to the dramatic, open landscapes of the Bannau Brycheiniog. The blend of natural beauty with visible remnants of industrial history, such as old quarries and viaducts, is another frequently mentioned highlight.

Are there any walks that focus on the area's industrial past?

Yes, many trails incorporate the region's rich industrial heritage. The Pontsarn Viaduct – Morlais Quarry loop from Pant is a great example. This 3.6-mile (5.8 km) walk takes you past key historical sites, offering a direct connection to the area's past as an industrial powerhouse.

Is parking available at the start of the main trails?

Most of the popular trailheads have dedicated parking areas. For reservoir walks, you'll find car parks at Pontsticill and Llwyn-on. The Garwnant Visitor Centre also offers ample parking and serves as a starting point for several forest trails. For hikes into the higher peaks like Pen y Fan, be aware that car parks can fill up very quickly, especially on weekends and holidays, so an early start is recommended.

What are some good places to hike in Merthyr Tydfil?

The region offers a fantastic variety of hiking environments. Key areas include:

  • Bannau Brycheiniog National Park: A vast area of wild moorland and high peaks, offering the most challenging and scenic hikes.
  • Cronfa Ddŵr Pontsticill (Pontsticill Reservoir): A popular spot known for its beautiful circular walks alongside the water and the Brecon Mountain Railway.
  • The Taff Trail: A well-marked, long-distance path that's easy to follow and offers lovely riverside scenery.
  • Twyn Brynbychan: A local hill that provides fantastic panoramic views and multiple walking routes to its summit.

How many hiking trails are there around Merthyr Tydfil?

You can explore over 60 curated hiking routes around Merthyr Tydfil. These range from 19 easy walks perfect for a casual stroll to 12 difficult tours that will challenge experienced hikers, with dozens of moderate options in between.

Most popular routes around Merthyr Tydfil

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