13
riders
5
rides
Mountain biking around St. Athan offers diverse landscapes, from the dramatic Glamorgan Heritage Coast to inland rural farmland and ancient woodlands. The area provides a variety of trails, including the well-regarded Smilog Trails, which feature hand-crafted, technical descents. These physical features create varied terrain suitable for different mountain biking experiences.
Last updated: May 9, 2026
2
riders
39.8km
02:37
500m
500m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
3
riders
33.5km
02:25
520m
520m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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4
riders
56.0km
03:30
610m
610m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
1
riders
31.5km
01:53
330m
330m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
1
riders
17.5km
01:14
230m
230m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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This imposing building stands out from the relatively flat surroundings and harks to a by-gone era. Impressive stature!
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The weir spans the River Taff, which flows directly through the heart of South Wales. It's a nice place to stop and refuel with picnic benches and a peaceful atmosphere.
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The Walnut Tree Viaduct spanned the valley between the ridges of the Garth and Castell Coch. The one remaining brick pillar is all that remains of this massive structure.
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Industrial landmark at a very busy road junction on the Taff Trail.
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There are 6 mountain bike trails documented on komoot around St. Athan, offering a range of experiences from easy rides to more challenging routes.
The terrain around St. Athan is diverse, featuring the dramatic Glamorgan Heritage Coast with its cliff tops and expansive views, as well as inland rural farmland and ancient woodlands. You'll also find the well-regarded Smilog Trails, known for their hand-crafted, technical, and steep descents.
Yes, there is an easy mountain bike trail available. The The Red Fox Inn, Penllyn – Cowbridge Physic Garden loop from Cowbridge is 17.5 km long with 233 meters of elevation gain, making it a good option for those new to mountain biking or looking for a more relaxed ride.
For more challenging rides, consider routes that incorporate the Smilog Trails. These trails, such as the View of the Countryside Path – Smilog Trails loop from Llangan or the Smilog Trails – Winding Path and Archway loop from Bonvilston, are known for their technical sections and significant elevation gains, requiring good fitness and advanced riding skills.
Many routes offer views of interesting landmarks. For instance, the Radyr Weir – View of Castell Coch loop from Wenvoe Transmitting Station provides expansive countryside views and notable landmarks. The St Lythans Burial Chamber – Barry Dock Office loop from Barry passes by sites of historical significance like the St Lythans Burial Chamber and the Barry Dock Office. You can also find the Nash Point Lighthouse and Cliffs along the Glamorgan Heritage Coast.
Yes, all the mountain bike trails listed are loop routes, allowing you to start and end at the same point. Examples include the Radyr Weir – View of Castell Coch loop from Wenvoe Transmitting Station and the View of the Countryside Path – Smilog Trails loop from Llangan.
The area is enjoyable for mountain biking throughout much of the year. Spring and autumn offer pleasant temperatures and vibrant scenery. While winter riding is possible, some trails, especially those with technical descents or in wooded areas, might become muddy and more challenging due to rain.
For families, the easier routes are generally more suitable. The The Red Fox Inn, Penllyn – Cowbridge Physic Garden loop from Cowbridge is an easy-rated trail that could be a good option for families looking for a less strenuous ride. Additionally, the broader area offers coastal paths and rural tracks that can be adapted for family cycling.
Specific parking information varies by trailhead. For routes like those incorporating the Smilog Trails, you would typically look for parking near the starting points in areas like Llangan or Bonvilston. For coastal routes, parking might be available at popular access points along the Glamorgan Heritage Coast.
While St. Athan itself has some public transport links, accessing specific trailheads, especially for the Smilog Trails which are more rural, might require a combination of public transport and a short ride or walk. For routes closer to towns like Barry or Cardiff, public transport options may be more direct.
Mountain bikers often praise the diverse landscapes, from the dramatic coastal views to the tranquil rural farmland and ancient woodlands. The technical challenges offered by sections of the Smilog Trails are also a significant draw for experienced riders, while the variety ensures options for different skill levels.
The village of St. Athan and nearby towns like Cowbridge offer various cafes and pubs where you can refuel after your ride. For example, the The Red Fox Inn, Penllyn – Cowbridge Physic Garden loop from Cowbridge starts near The Red Fox Inn, providing a convenient stop.


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