4.3
(294)
13,823
riders
60
rides
No traffic road cycling routes around Llanishen Reservoir offer a diverse landscape for cyclists, characterized by a mix of grassland, woodland, and urban paths. While direct cycling around the reservoir perimeter is restricted due to its SSSI status, the surrounding area provides an extensive network of routes. These routes feature varying elevations, including both flat sections and challenging hilly climbs, connecting to wider cycling networks. The region's infrastructure includes paved surfaces and quiet roads suitable for road cyclists.
Last updated: July 12, 2026
5.0
(4)
304
riders
62.8km
02:50
570m
570m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
4.0
(2)
96
riders
33.1km
01:42
460m
460m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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11
riders
45.7km
02:27
630m
630m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
10
riders
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
5.0
(1)
9
riders
13.5km
00:35
90m
90m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
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Popular around Llanishen Reservoir
Llandaff Cathedral is magnificent building nestled within the small community. There are also other historical buildings close by and it is worth a visit. Not from the city centre and the Taff Trail. Beautiful scenes in the autumn too as the leaves change colour.
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Great photo opportunity, but the area can be busy depending on the weather and it’s likely any progress on a bike would be very slow. Early mornings and evenings are good.
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Built in 1280, this castle has a fascinating life story. It is the second largest castle and grounds in UK, slightly smaller than Windsor castle. The water defenses are now home to plenty of birds and the grounds offer fantastic views of this stunning castle
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Cathedral Close winds its way through the grounds of Llandaff Cathedral, where you can take in the in the striking 12th century architecture. You can easily stop and explore the grounds, and be sure to visit the Old Bishop’s Palace, a medieval fortress located at the junction of Cathedral Close and High Street.
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one of the most interesting bike paths with many beautiful places
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Great cafe on the A48, with plenty of space to lock up your bike as you head in for coffee, etc.
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There are over 60 dedicated road cycling routes around Llanishen Reservoir that focus on minimizing traffic, offering a variety of experiences for different skill levels. You'll find options ranging from easy to difficult, ensuring there's something for every cyclist.
The routes around Llanishen Reservoir offer a diverse mix of terrain. You can expect paved surfaces, quiet roads, and some designated cycle lanes. The landscape varies from flat sections to challenging hilly climbs, passing through grassland, woodland, and urban paths.
Yes, there are over 20 easy road cycling routes designed to be traffic-free or on very quiet roads, perfect for beginners or families. While direct cycling around the reservoir perimeter is restricted, routes like the "Cardiff Castle – Cardiff Bay Barrage loop from Llanishen" offer an easier 17.0-mile path connecting to city landmarks and the waterfront.
Many routes connect to significant local attractions. You could cycle towards Caerphilly Castle on routes like the Caerphilly Castle – Caerphilly Castle loop from Heath Low Level, or explore Llandaff Cathedral via the Llandaff Cathedral – Gwern-Y-Steeple Climb loop from Heath Low Level. The area also connects to the Taff Trail, Roath Park, and Forest Farm Country Park for extended explorations.
Absolutely. For experienced cyclists looking for a challenge, there are several routes with significant elevation gain. For example, the Llanishen Reservoir – Fourteen Locks Pond loop from Heath High Level covers 46.3 km with over 635 meters of ascent, offering a demanding ride on quiet roads.
The komoot community highly rates the road cycling experience around Llanishen Reservoir, with an average score of 4.2 stars. Reviewers often praise the variety of routes, the scenic views, and the ability to find quiet roads away from heavy traffic, making it an enjoyable destination for road cyclists.
Yes, bicycle parking and shelters are available at the visitor centre and pedestrian entrances around Llanishen Reservoir, making it convenient to start your ride. Many routes also originate from areas with public parking facilities.
The Llanishen Reservoir area is well-connected. Many routes start from locations like Heath Low Level or Heath High Level, which are accessible by public transport, allowing you to reach the starting points of these traffic-free cycling adventures without a car.
Yes, many of the routes are designed as loops, allowing you to start and finish at the same point. For instance, the Fourteen Locks Pond – Monmouthshire Canal Towpath loop from Heath High Level is a substantial circular route covering nearly 60 km, offering a great day out on quiet roads.
The region offers enjoyable cycling throughout much of the year. Spring and autumn provide pleasant temperatures and beautiful scenery, while summer is ideal for longer rides. Even in winter, many paved routes remain accessible, though checking weather conditions for potential rain or ice is always advisable.
Yes, the modern two-storey visitor centre at Llanishen Reservoir itself features a café with a range of meals and refreshments. Additionally, many routes pass through or near villages and towns that offer pubs and cafes, providing convenient stops to refuel during your ride.
The Llanishen Reservoir area is rich in biodiversity. While cycling on the surrounding routes, you might spot various bird species, including blue tits, robins, and even owls. The site is also home to grass snakes, otters, bats, and amphibians, particularly in the nature reserves and woodland areas adjacent to the cycling paths.


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