4.6
(266)
4,260
hikers
10
hikes
Dog friendly hiking trails around Merthyr Mawr Warren National Nature Reserve traverse one of Wales' largest sand dune systems, covering 840 acres on the South Wales coast. The landscape features extensive sand dunes, including the "Big Dipper," the highest dune in Wales, alongside grasslands, saltmarsh, beaches, and woodlands. The area is characterized by its varied terrain, which includes sandy paths, limestone cliffs, and the meandering Ogmore River. This diverse environment offers a range of dog friendly hiking experiences.
Last updated: August 5, 2026
5
hikers
9.04km
02:24
90m
90m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5
hikers
5.26km
01:21
30m
30m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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4.4
(7)
22
hikers
11.7km
03:14
210m
210m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
6
hikers
5.77km
01:39
140m
140m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
5
hikers
6.66km
01:43
30m
30m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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There is a new path 15m down from the original route which rejoins the cut part way down
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don't follow me, you'll have to go back on yourself! luckily there was a desire path not too far down
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A small church from the 12th century. With a cemetery that has many old gravestones.
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Old Castle Down is a beautiful open area of calcareous grassland, acid grassland and heathland on limestone situated between the villages of St Brides Major and Ewenny in the Vale of Glamorgan. Due to its wide range of vegetation types and rare species, the area has been declared a Site of Special Scientific Interest. The hilltop vantage point provides excellent views over the stunning surrounding landscape and villages of the Vale, including over the disused Duchy Quarry, which exposes Carboniferous rocks that date back 340 million years!
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Discover this old clapper bridge, located in the tiny hamlet of Castle upon Alun in the Vale of Glamorgan. The term 'clapper bridge' derives its name from the sound that horses and donkeys hooves would have made whilst trotting over it in times gone by. It's a fascinating piece of history and a wonderful gem to stumble across in your adventures through this corner of South Wales. There is a ford nearby, too, which features a string of stepping stones and a nice place to sit down and eat some lunch.
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Kenfig Pool, covering an area of 70 acres is the second largest freshwater lake in south Wales (after Llangorse Lake). It is the heart of the nature reserve and is a valuable stopping point for migrating birds. The lake's maximum depth is about 12 feet - although legend has it that the lake is bottomless and fed by seven springs. There are 2 bird hides, one on the South and one on the North shore.
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Lovely little beach with freshwater, seen lots of families swimming here in summer
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There are over 10 dog-friendly hiking trails around Merthyr Mawr Warren National Nature Reserve. These routes cater to various fitness levels, with 5 easy and 5 moderate options, ensuring a suitable adventure for every dog and owner.
The terrain is incredibly diverse, ranging from vast sand dunes, including the impressive 'Big Dipper', to grasslands, saltmarsh, and peaceful riverside paths along the Ogmore River. You'll also encounter coastal stretches and woodland areas. Be prepared for sandy paths that can be steep in parts, especially when tackling the dunes.
Yes, several routes offer circular options perfect for dog walks. For example, the Stepping Stones – Old Castle Down loop from Ogmore is an easy circular hike. The region research also mentions a 'River Ogmore – Ogmore-by-Sea Beach loop' and 'Ogmore Castle Ruins – Candleston Castle Ruins loop' which are popular circular options.
Parking is generally available at designated car parks near the reserve's main entrances. Specific parking information for individual trailheads can often be found on komoot tour pages or local signage. Always check for any parking fees or restrictions before your visit.
For an easy and enjoyable experience, consider routes like the Eroded Ravine – Dog-Friendly Beach loop from Porthcawl, which is 5.25 km long, or the Kenfig Pool – Wide Sandy Beach loop from Kenfig, at 6.66 km. These trails offer gentle gradients and diverse scenery, perfect for a relaxed outing with your dog and family.
The reserve is rich in history. You can explore the ruins of Candleston Castle, a 14th-century fortified manor house, or the 12th-century Ogmore Castle just across the river. The area also holds significant archaeological value with finds from various historical periods. Many trails will take you past these fascinating sites.
The 'Big Dipper' is Wales' highest sand dune and reportedly the second highest in Europe, offering spectacular panoramic views. While it's a challenging climb, you can certainly hike it with your dog. Just be prepared for a demanding ascent on sandy terrain and ensure your dog is fit enough for the effort.
Merthyr Mawr Warren is a National Nature Reserve, so it's crucial to keep dogs under control, especially due to the diverse wildlife, including rare insects, birds, and reptiles like adders. Always follow local signage regarding lead requirements, particularly during nesting seasons or in sensitive habitats. Remember to pick up after your dog to preserve the natural environment.
While specific establishments aren't listed in the guide data, the area surrounding Merthyr Mawr Warren, including nearby villages and towns like Ogmore-by-Sea and Porthcawl, often has dog-friendly pubs and cafes. It's always a good idea to check with individual venues beforehand to confirm their dog policies.
The area is highly rated by the komoot community, with an average score of 4.58 stars. Reviewers often praise the unique and diverse landscapes, from the challenging sand dunes to the peaceful coastal and riverside paths. The opportunity to explore historical ruins like Candleston and Ogmore Castles, combined with the varied terrain, makes it a truly engaging destination for hikers and their dogs.
Public transport options to Merthyr Mawr Warren can be limited. While local bus services might operate in the general vicinity, direct access to the reserve's trailheads often requires a short walk or taxi ride from the nearest stop. It's advisable to check local bus schedules and dog policies for public transport providers in the Bridgend area before planning your trip.


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