4.5
(13)
1,630
runners
90
runs
Jogging around Merthyr Cynog offers routes through lower hills and interfluvial ridges, situated between the Ysgir Fechan and Ysgir Fawr rivers. The landscape features wild areas within the Brecon Beacons National Park, characterized by valley sides, prominent high ridges, and open moorland. Canal paths provide mostly paved surfaces for longer, scenic runs, while hillforts offer challenging ascents with rewarding views.
Last updated: July 4, 2026
5.0
(1)
135
runners
5.32km
00:33
20m
20m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
79
runners
26.4km
02:46
130m
130m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Sign up for free
5.0
(1)
47
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
38
runners
29.6km
03:07
270m
270m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
25
runners
18.0km
01:57
150m
150m
Hard run. Very good fitness required. Mostly paved surfaces. 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
St. Mary's Church with café in the heart of Brecon
1
0
gorgeous views, very popular with walkers, so be aware
0
0
ideal for cycling, road bike would do it although gravel/mtb would be more comfortable. very popular with walkers so be aware
0
0
This structure is one of the largest canal aqueducts ever built in South Wales. Its four stone arches carry the Brecknock and Abergavenny Canal (later the Monmouthshire & Brecon Canal) across the Usk to enable boats to reach Brecon, on the north side of the river Brynich aqueduct was one of the last sections of the canal to be completed to take the canal into Brecon in 1801. The structure was designed by Thomas Dadford Junior and built by local contractors. The aqueduct is at right angles to the river, reducing its length to the minimum possible. This means that the canal, running parallel to the river, has to turn sharply on both approaches.
0
0
This lock was the first on the Monmouthshire & Brecon Canal to be restored after the canal fell into dereliction. The lock was created when the canal was built c.1800. The section of canal which crosses the river Usk on the nearby Brynich aqueduct is lower than the final stretch of water into Brecon. The bridge over the canal here is joined to the lock walls. The road continues across the river Usk on a five-arch stone bridge constructed in the late 18th century.
0
0
Moderate trail depending on the distance, plenty to explore
0
2
This is the canal tunnel that goes underneath the A40 dual carriageway. It is quite a length and the footway is narrow, so if you are on a bicycle I would suggest you take it carefully as pedestrians have right of way here.
5
0
There are over 90 running routes around Merthyr Cynog, offering a diverse range of experiences. You'll find everything from gentle canal-side jogs to more challenging ascents into the Brecon Beacons National Park.
The running trails around Merthyr Cynog are highly regarded by the komoot community, boasting an average rating of 4.4 stars from over 10 reviews. Runners frequently praise the varied terrain, from tranquil canal paths to scenic hill climbs, and the stunning natural beauty of the Welsh landscape.
Yes, Merthyr Cynog offers several easy running routes perfect for beginners or those seeking a relaxed jog. The Monmouthshire and Brecon Canal – Brecon Castle loop from Brecon is a popular choice, providing a mostly paved, flat surface along the scenic canal for about 10 km.
For those seeking a greater challenge, the area provides numerous difficult routes. Consider the Brecon Castle – Brynich Aqueduct loop from Llanspyddid, a demanding 29.5 km trail with significant elevation changes, or the Brecon Canal Basin – Monmouthshire and Brecon Canal loop from Brecon, which covers 17.7 km with notable climbs.
Many of the running routes around Merthyr Cynog are circular, allowing you to start and finish at the same point. A great example is the Monmouthshire and Brecon Canal – Monmouthshire and Brecon Canal loop from Brecon, a 9 km trail that takes you through picturesque canal landscapes.
The running trails around Merthyr Cynog offer a mix of terrains. You'll find largely flat, well-maintained paths along the Monmouthshire and Brecon Canal, ideal for steady runs. For more adventurous runners, the routes extend into the Brecon Beacons National Park, featuring rolling hills, open moorlands, and challenging ascents on natural trails.
Absolutely! The region is rich in scenic spots. Many routes offer views of the Brecon Beacons. For specific landmarks, look for trails that pass by the Brynich Aqueduct or the historic Twyn y Gaer Summit and Iron Age Hillfort, which provides panoramic vistas of the Usk valley and surrounding mountains.
Yes, many of the running trails in the Merthyr Cynog area are dog-friendly, especially the canal paths and open moorland sections. However, always keep your dog under control, particularly when passing livestock, and be mindful of local signage, especially within the Brecon Beacons National Park, where certain areas may have specific rules for dogs.
For families, the flatter, well-surfaced sections of the Monmouthshire and Brecon Canal are ideal. These paths offer a safe and enjoyable environment for all ages, with minimal elevation gain and plenty of opportunities to enjoy the natural surroundings. Routes starting from Brecon along the canal are particularly suitable.
Spring and autumn are often considered the best times for jogging in Merthyr Cynog, offering pleasant temperatures and beautiful scenery as wildflowers bloom or autumn leaves change. Summer can be lovely, but be prepared for warmer weather. Winter runs are possible, but trails in the Brecon Beacons can be challenging due to wet, muddy, or icy conditions, so appropriate gear is essential.
While Merthyr Cynog itself is not directly known for waterfalls, its proximity to the Brecon Beacons National Park means that spectacular waterfalls are within reach. The park is renowned for its 'Waterfall Country' in the south, offering dedicated trails to explore these natural wonders, which could be incorporated into a longer running adventure.
Access to some running routes, particularly those along the Monmouthshire and Brecon Canal, can be achieved via public transport to nearby towns like Brecon. From there, you can easily join the canal paths. For routes deeper into the Brecon Beacons, personal transport is generally more convenient.
Parking is typically available in towns and villages adjacent to the running routes, such as Brecon, which offers access to the Monmouthshire and Brecon Canal trails. For routes within the Brecon Beacons National Park, designated car parks are usually provided at popular trailheads. Always check local signage for parking restrictions and fees.


Browse the best Running Trails & Routes in other regions.