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Running Trails
United Kingdom
Wales
South Wales

Merthyr Tydfil

The best running trails around Merthyr Tydfil

4.5

(2)

573

runners

59

runs

Jogging around Merthyr Tydfil offers diverse landscapes, from the southern edge of the Brecon Beacons National Park to the Taff Valley. The region is characterized by rolling hills, lush forests, and tranquil lakes, including several reservoirs like Pontsticill and Llwyn-On. Its industrial heritage is visible through historic elements such as viaducts and old tramroads, providing a unique backdrop to natural beauty. Cyfarthfa Park also offers expansive green spaces for urban running.

Best jogging routes around Merthyr Tydfil

  • The most popular…

Last updated: April 23, 2026

36

runners

#1.

Pen y Fan – Cribyn Summit loop from Merthyr Tydfil

52.7km

06:20

1,270m

1,270m

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate
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Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

21

runners

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

18

runners

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

17

runners

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard

Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate
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Popular around Merthyr Tydfil

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Tips from the Community

Chris Shannon
May 2, 2026, Welsh Mountain Ponies in Bannau Brycheiniog National Park

I didn't get the chance to take pics but there are wild horses up there

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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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Jo
October 8, 2025, Pontsticill Reservoir

lovely . ( no phone signal ) bring yourself a drink and enjoy the view

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A remnant of Merthyr's past. This bridge carried a railway line that either took you through a tunnel to Aberdare or sent you north towards Cefn Coed and on to Brecon via Torpantau. Under the bridge was the Merthyr to Cardiff Glamorganshire canal which carried the produce of Cyfarthfa iron works to the ports of Cardiff which was then shipped all over the world.

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Lovely path to ride on. A gentle incline and suitable for most abilities

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Some great views of the valley below once you get on the viaduct

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Good ride

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Great, free car park. A small tearoom is located about 100 yards down the road

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Frequently Asked Questions

How many running routes are available in Merthyr Tydfil?

Merthyr Tydfil offers a wide selection of running routes, with over 50 trails recorded on komoot. These range from easy paths to challenging mountain runs, catering to various fitness levels.

What makes Merthyr Tydfil a unique destination for runners?

Merthyr Tydfil provides a distinctive running experience due to its location at the southern edge of the Brecon Beacons National Park, blending natural beauty with rich industrial heritage. You'll find routes through rolling hills, lush forests, tranquil reservoirs like Pontsticill Reservoir, and alongside historic elements such as viaducts and old tramroads.

What do other runners say about the trails in Merthyr Tydfil?

The running routes in Merthyr Tydfil are highly regarded by the komoot community, holding an average rating of 4.5 stars. Runners often praise the diverse landscapes, from challenging mountain climbs to scenic reservoir loops, and the well-maintained paths that make exploring the area enjoyable.

Are there easy running routes suitable for beginners in Merthyr Tydfil?

Yes, Merthyr Tydfil has several easy running routes perfect for beginners. For instance, the Running loop from Merthyr Tydfil is a moderate 6.6 km path with minimal elevation gain. Cyfarthfa Park also offers expansive green spaces ideal for a gentle jog.

Are there any circular running routes around Merthyr Tydfil?

Absolutely. Many routes in the area are circular, allowing you to start and finish in the same location. Popular options include the scenic Pontsticill Reservoir – Pontsticill Reservoir loop from Merthyr Tydfil and the Hengoed Viaduct – Hengoed Viaduct loop from Treharris, which incorporates parts of the Taff Trail.

Can I run with my dog on trails in Merthyr Tydfil?

Many trails in Merthyr Tydfil are dog-friendly, especially those in the Brecon Beacons National Park and along the Taff Trail. It's always recommended to keep your dog on a lead, especially near livestock or in nature reserves like the Taff Fechan, and to check specific route guidelines for any restrictions.

What kind of landmarks or points of interest can I see while running?

Running in Merthyr Tydfil offers views of both natural and historical landmarks. You can pass by impressive structures like the Pontsarn Viaduct, explore the dramatic wooded gorge of the Taff Fechan Nature Reserve, or enjoy the serene beauty of Pontsticill Reservoir. The Taff Trail also features historic tramroad sections.

Are there challenging long-distance running options in the Merthyr Tydfil area?

For experienced runners seeking a challenge, Merthyr Tydfil is an excellent base. The Pen y Fan – Cribyn Summit loop from Merthyr Tydfil is a demanding 52.7 km route with significant elevation gain, taking you through the heart of the Brecon Beacons National Park.

How can I access running routes using public transport in Merthyr Tydfil?

Merthyr Tydfil has public transport links that can help you reach various trailheads. The Taff Trail, for example, is accessible from several points within the town and surrounding villages, which are served by local bus routes. For specific routes, checking local bus schedules is advisable.

Are there any running routes suitable for families with children?

Yes, several routes are suitable for families. Cyfarthfa Park offers gentle paths and open spaces. The Taff Trail, particularly its flatter sections, provides a safe and enjoyable environment for family runs. Shorter, moderate loops like the Running loop from Troed-y-rhiw are also good options.

What is the best time of year to go running in Merthyr Tydfil?

Spring and autumn generally offer the most pleasant running conditions in Merthyr Tydfil, with milder temperatures and beautiful scenery as the landscape changes. Summer can be warm, especially on exposed trails, while winter runs require appropriate gear due to colder weather and potentially wet or icy conditions, particularly in the Brecon Beacons.

Where can I find a 5k running route in Merthyr Tydfil?

For a dedicated 5k run, Merthyr Tydfil hosts a parkrun at Merthyr Leisure Village, offering a timed 5k course on tarmac paths. Additionally, many of the shorter loops available on komoot, such as the Running loop from Merthyr Tydfil, can be adapted or are close to a 5k distance.

Are there opportunities for wildlife spotting while running?

The diverse landscapes of Merthyr Tydfil, from the Brecon Beacons to the Taff Valley and its reservoirs, provide excellent opportunities for wildlife spotting. Keep an eye out for various bird species, especially around the reservoirs, and other local fauna in the wooded and open areas. The Taff Fechan Nature Reserve is particularly rich in biodiversity.

Most popular routes around Merthyr Tydfil

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