3.8
(22)
123
hikers
02:44
9.18km
290m
Hiking
Hike the moderate 5.7-mile Castle Coch and Craig Yr Allt loop, exploring a fairytale castle, Fforest Fawr woodlands, and panoramic views.
Last updated: February 26, 2026
Waypoints
Start point
Parking
Get Directions
943 m
Highlight • Castle
Tip by
5.18 km
Highlight • Trail
Tip by
9.18 km
End point
Parking
Way Types & Surfaces
Way Types
3.82 km
3.20 km
1.20 km
739 m
229 m
Surfaces
3.16 km
2.27 km
1.69 km
1.49 km
326 m
261 m
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Elevation
Highest point (240 m)
Lowest point (80 m)
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Weather
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Wednesday 6 May
14°C
7°C
36 %
Additional weather tips
Max wind speed: 13.0 km/h
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This route was planned by komoot.
This loop is generally considered a moderate hike, requiring a good level of fitness due to its various ascents and descents. The terrain is quite varied, featuring natural paths, forestry tracks, woodland trails, and some paved or gravel sections. You'll encounter grassy trails and heather-strewn hillsides, especially on Craig yr Allt. Be prepared for numerous short, strenuous climbs and descents, and some paths may be muddy or overgrown after rain. There are also stiles to cross, some with dog gates, and short stretches of road walking.
The trail offers a wonderful blend of historical and natural beauty. It starts and ends at the enchanting Castell Coch, a 'fairytale 19th-century castle'. You'll walk through extensive woodlands like Fforest Fawr, and local nature reserves. Upon reaching the summit of Craig yr Allt, you'll be rewarded with expansive views stretching south to Cardiff and the Bristol Channel, west towards Garth Mountain, and overlooking undulating hills and scattered settlements, including Caerphilly to the north and east.
Yes, the trail is generally dog-friendly. You'll find stiles along the route, some of which are equipped with dog gates, making it easier for your canine companion. However, please keep dogs under control, especially in areas with livestock or wildlife, and be mindful of other hikers.
The loop typically starts and ends near Castell Coch. Parking is usually available in the vicinity of the castle. For public transport, you would need to check local bus routes that serve Tongwynlais or the area around Castell Coch, as it's a popular attraction.
The trail can be enjoyed year-round, but spring and autumn are particularly beautiful. In spring, you might spot bluebells and wild garlic in the woodlands. Autumn offers stunning foliage colours. Summer is also pleasant, though some sections might be overgrown. Winter hiking is possible, but be prepared for potentially muddy and slippery conditions, especially on steeper sections.
No, there are no specific permits or entrance fees required to hike the Castle Coch and Craig Yr Allt loop itself, nor for accessing the general Fforest Fawr woodland area. However, if you wish to enter and explore the interior of Castell Coch, there will be an admission fee.
Yes, this route incorporates sections of several other well-known paths. You'll find yourself on parts of the Taff Trail, the Cambrian Way, and Lôn Las Cymru (South). It also forms part of the longer Taff Ely Ridgeway Walk, offering opportunities to extend your hike if desired.
Given the moderate difficulty and varied terrain, we recommend sturdy hiking boots, appropriate clothing for the weather (layers are always a good idea), and plenty of water. Walking poles can be advisable, especially for the steeper and potentially slippery sections. Don't forget a map or GPS device, as well as snacks.
Despite its moderate rating and climbs, the Craig yr Allt section is often recommended for families thanks to its accessible paths and rewarding scenery. However, be aware of the elevation changes and varied terrain. It's best suited for families with children who are accustomed to hiking and have a good level of fitness.
Yes, as the trail starts and ends near Castell Coch and passes through populated areas, you can find amenities such as cafes and pubs in the nearby villages, particularly in Tongwynlais. These can be great spots for refreshments before or after your hike.
The trail winds through significant woodlands and nature reserves like Fforest Fawr, Fforestganol, and Cwm Nofydd. Depending on the season, you might spot bluebells and wild garlic. The diverse habitats support various bird species and small mammals. Keep an eye out for local flora and fauna as you explore the tranquil environments.