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United Kingdom
Wales
South Wales
Bridgend

Merthyr Mawr Warren National Nature Reserve

Routes
Hikes
United Kingdom
Wales
South Wales
Bridgend

Merthyr Mawr Warren National Nature Reserve

The best walks and hikes around Merthyr Mawr Warren National Nature Reserve

4.6

(237)

4,050

hikers

15

hikes

Hiking around Merthyr Mawr Warren National Nature Reserve features a unique landscape dominated by extensive sand dunes, including the "Big Dipper," Wales' highest sand dune. The reserve also encompasses coastal environments with beaches, riverine paths along the Ogmore River, and forested areas. This protected area provides varied terrain for hikers, from sandy stretches to moderate climbs.

Best hiking trails around Merthyr Mawr Warren National Nature Reserve

  • The most popular hiking route is River Ogmore – Ogmore-by-Sea Beach loop from Ogmore

Last updated: May 7, 2026

5.0

(1)

8

hikers

#1.

River Ogmore – Ogmore-by-Sea Beach loop from Ogmore

4.20km

01:05

30m

30m

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

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Easy

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

Moderate
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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

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

Easy
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Popular around Merthyr Mawr Warren National Nature Reserve

Road Cycling Routes around Merthyr Mawr Warren National Nature Reserve

Running Trails around Merthyr Mawr Warren National Nature Reserve

Cycling around Merthyr Mawr Warren National Nature Reserve

MTB Trails around Merthyr Mawr Warren National Nature Reserve

Gravel biking around Merthyr Mawr Warren National Nature Reserve

Tips from the Community

Andy Lewis MTB 🇬🇧
July 16, 2025, Ogmore Castle Ruins

In the beginning, as a castle of earth and wood in the early 12th century, it was quickly fortified in stone before being further strengthened with a curtain wall in the early 13th century. Unusually, the later additions have not obscured the castle’s earliest defensive features, with the banks and ditches built at Ogmore’s birth still clearly visible. Another original feature is the deep ditch around the inner ward, designed to fill with sea water at high tide.

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No always visible during the winter

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These stepping stones have quite a history. Before the suspension bridge for pedestrian use was built there was, at that spot, a series of stepping stones. When the bridge came into use these stones were lifted and placed near Ogmore Castle, where they remain today, keeping their original name: Stepsau Teilo. At one period towards the end of the last century a competition developed to see how quickly the crossing could be made without falling into the river. Many tried to take the stones at full speed and, cheered on by onlookers there were several slips.

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Adie
January 5, 2023, Ogmore Castle Ruins

Ogmore castle overlookins a picturesque river crossing marked by a series of ancient stepping stones. Along with the ruins of the stone structure, Ogmore castle's earliest defensive features of banks and ditches are still clearly visible, including the deep ditch around the inner ward, designed to fill with sea water at high tide.

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Over or through it, your choice!

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Make sure you're comfortable with carrying your bike for this section, it does get quite deep in the middle.

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Fun to cross, very slippery when wet.

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Frequently Asked Questions

What kind of terrain will I encounter when hiking in Merthyr Mawr Warren National Nature Reserve?

The reserve offers a unique and varied landscape. You can expect extensive sand dunes, including the impressive "Big Dipper," coastal paths along two beaches, peaceful riverine trails following the Ogmore River, and some forested areas with pines and alders. The terrain ranges from flat, sandy stretches to more challenging dune climbs.

Are there any family-friendly hiking options in Merthyr Mawr Warren National Nature Reserve?

Yes, Merthyr Mawr Warren is well-suited for families. Many of the trails are considered easy, offering gentle strolls through diverse scenery. For example, the River Ogmore – Ogmore-by-Sea Beach loop from Ogmore is an easy 2.6-mile (4.2 km) path that follows the river and leads to the coast, perfect for a family outing.

Can I bring my dog on the hiking trails in Merthyr Mawr Warren National Nature Reserve?

Merthyr Mawr Warren is a popular spot for dog walkers. While dogs are generally welcome, it is a National Nature Reserve with sensitive habitats and wildlife. Please ensure your dog is kept under close control, preferably on a lead, especially near livestock, nesting birds, or other wildlife. Always clean up after your dog.

Are there any circular hiking routes available?

Yes, many of the trails in Merthyr Mawr Warren National Nature Reserve are designed as circular routes, allowing you to experience different aspects of the landscape without retracing your steps. An example is the Candleston Castle Ruins – Traeth yr Afon Beach loop from Ogmore, an easy 3.8-mile (6.1 km) trail that combines historical ruins with coastal views.

What historical landmarks or points of interest can I see along the trails?

The reserve is rich in history. You can explore the ivy-clad ruins of Candleston Castle nestled within the woods. Just across the Ogmore River, Ogmore Castle is another fantastic medieval ruin that often serves as a scenic starting point for hikes. The shifting sands have also revealed archaeological finds from various periods, adding to the area's intrigue.

How many hiking trails are available in Merthyr Mawr Warren National Nature Reserve?

There are over 15 hiking trails recorded in Merthyr Mawr Warren National Nature Reserve on komoot, offering a variety of distances and difficulties. The majority of these routes are considered easy, with a few moderate options for those seeking a bit more challenge.

What do other hikers enjoy most about hiking in Merthyr Mawr Warren National Nature Reserve?

The area is highly rated by the komoot community, with an average score of 4.6 stars from over 200 reviews. Hikers frequently praise the unique and diverse landscape, particularly the impressive sand dunes and the blend of coastal, riverine, and woodland environments. The historical ruins like Candleston and Ogmore Castles are also often highlighted as enjoyable points of interest.

Is there parking available for hikers at Merthyr Mawr Warren National Nature Reserve?

Yes, there is parking available near the main access points to Merthyr Mawr Warren National Nature Reserve, particularly around the village of Ogmore-by-Sea, which is a common starting point for many trails. Specific car park locations can be found on local signage or maps of the reserve.

What is the best time of year to visit Merthyr Mawr Warren for hiking?

Merthyr Mawr Warren can be enjoyed year-round, but each season offers a different experience. Spring brings blooming wildflowers and active wildlife. Summer is popular for coastal walks and beach access, though the dunes can be strenuous in direct sun. Autumn offers beautiful colours in the wooded areas, and winter provides crisp, quiet walks, often with dramatic coastal scenery. Always check weather conditions before heading out.

Are there any longer or more challenging routes for experienced hikers?

While most routes are easy, the unique terrain, especially the extensive sand dunes, can provide a good workout. The "Big Dipper" dune, for instance, offers a strenuous climb. For a moderate challenge, consider the Ogmore Castle Ruins – Candleston Castle Ruins loop from Ogmore, a 5.6-mile (9.0 km) path connecting two historical sites with some elevation changes.

What kind of wildlife can I expect to see in Merthyr Mawr Warren?

Merthyr Mawr Warren is a National Nature Reserve, home to diverse wildlife. The varied habitats support rare insects, fungi, and plants. Keep an eye out for striking cinnabar and six-spot burnet moths, as well as grizzled skipper butterflies. Birdwatchers may spot various coastal and woodland species, and the reserve is known for its unique flora adapted to the dune environment.

Can I access Merthyr Mawr Warren National Nature Reserve using public transport?

Public transport options to Merthyr Mawr Warren are limited but possible. Bus services operate to nearby towns like Bridgend, from which local connections or a taxi may be required to reach the reserve's main access points, such as Ogmore-by-Sea. Planning your journey in advance is recommended.

Most popular routes around Merthyr Mawr Warren National Nature Reserve

Hikes from bus stations around Merthyr Mawr Warren National Nature Reserve

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