4.5
(5123)
47,725
hikers
39
hikes
Hiking around Merthyr Tydfil offers access to the southern edge of the Bannau Brycheiniog (Brecon Beacons) National Park, featuring a diverse landscape of mountains, valleys, and reservoirs. The region is characterized by steeply sloping valley sides, high ridges, and open moorland, providing varied terrain for exploration. Rivers like the Taff and its tributaries feed scenic reservoirs such as Pontsticill and Llwyn-on, which serve as starting points for numerous trails.
Last updated: May 16, 2026
4.3
(36)
284
hikers
5.50km
01:26
40m
40m
Hike the Llwyn-on Reservoir loop for expansive views of deep blue waters, framed by the rolling hills of the Brecon Beacons. This easy 3.4-mile (5.5 km) route takes about 1…
4.6
(14)
68
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Sign up for free
3.0
(5)
35
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.7
(3)
22
hikers
13.5km
03:51
290m
280m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
3.0
(1)
23
hikers
21.0km
06:06
550m
550m
Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
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.
0
0
Nice walk relatively flat and pretty views
0
0
If you're a Trig nerd like me take this circular route to bag this one at Twyn Mwyalchod!
0
0
the lower reservoir has a nice flat road next to it, a welcome relief after the lumpy roads that lead to it from either direction.
0
0
Great views and a very large plug hole at the end of the Dam
0
0
Great section of trail, bridge over a river worn valley. It's worth taking this trail a hit of extra climbing up from Pontsticill, the trail is fantastic and gives plenty of elevated views.
1
0
Nice picturesque reservoir with a great campsite just below it if you are on a bike or hiking tour.
0
0
There are over 40 hiking trails around Merthyr Tydfil that are easily accessible by bus, offering a wide range of distances and difficulties for all types of hikers.
The komoot community highly rates the trails in Merthyr Tydfil, with an average score of 4.5 stars from over 5000 ratings. Hikers often praise the diverse landscapes, from reservoir walks to challenging mountain ascents, and the convenience of public transport access to these natural beauties.
Yes, there are 10 easy bus-accessible routes perfect for beginners or those looking for a relaxed stroll. A great option is the Llwyn-on Reservoir loop, which offers gentle terrain and beautiful waterside views.
Many of the bus-accessible routes are circular, allowing you to start and end at the same point without needing to retrace your steps. For example, the Pontsticill Reservoir loop from Pontsticill is a popular moderate circular option offering stunning views of the reservoir and surrounding hills.
Absolutely. Many trails are suitable for families, especially those around the reservoirs or in areas like the Garwnant Visitor Centre. These often feature relatively flat paths and scenic spots. The Llwyn-on Reservoir loop is a good family-friendly choice.
Yes, most trails in the Merthyr Tydfil area are dog-friendly, though it's always best to keep dogs on a lead, especially near livestock or in nature conservation areas. The reservoir walks, such as the Pontsticill Reservoir – View of Pontsticill Reservoir loop, are popular choices for walks with canine companions.
You can explore a wealth of natural beauty and historical landmarks. Many routes take you past the stunning Pontsticill Reservoir and Llwyn-on Reservoir Dam. You might also encounter the picturesque Pontsarn Blue Pool or the historic Pontsarn Viaduct. The region's proximity to the Brecon Beacons National Park also means dramatic mountain views are often part of the experience.
For experienced hikers seeking a challenge, there are 8 difficult bus-accessible routes. These often involve significant elevation gain and longer distances. An example is the demanding View of Pen y Fan – Pen y Fan loop from Pontsticill, which takes you into the heart of the Brecon Beacons.
Many trails offer breathtaking views, especially those ascending into the Brecon Beacons or circling the large reservoirs. Routes around Pontsticill Reservoir provide panoramic vistas of the water and surrounding hills. Higher elevation trails, like those leading towards Pen y Fan, offer expansive views across the national park and beyond.
Spring and autumn are often considered the best times for hiking in Merthyr Tydfil, with milder temperatures and beautiful seasonal colours. Summer offers longer daylight hours, but can be busier. Winter hikes are possible but require appropriate gear due to potentially challenging weather conditions, especially at higher elevations in the Brecon Beacons.
While popular spots can attract visitors, many trails offer a sense of solitude. Exploring routes around Cefn Cil Sanws, a 460m hill, can provide peaceful hikes with extraordinary views towards the Brecon Beacons, often with fewer crowds than the main peaks. The extensive network means you can often find quieter paths away from the most well-known spots.


Browse the best Hikes in other regions.