4.1
(42)
2,959
riders
121
rides
Road cycling routes around Mountain Ash West navigate a landscape defined by river valleys, reservoirs, and significant climbs. The region features a mix of open roads and areas bordering natural reserves, offering varied terrain for cyclists. Expect ascents that lead to viewpoints and descents through wooded areas. This area provides diverse options for road cyclists seeking both challenging climbs and scenic routes.
Last updated: August 17, 2026
5.0
(2)
239
riders
92.6km
04:17
820m
820m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
3.0
(2)
146
riders
52.6km
02:24
500m
500m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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41
riders
53.5km
02:31
510m
510m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
24
riders
96.2km
04:18
790m
790m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
21
riders
38.3km
01:55
480m
480m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Nice picturesque reservoir with a great campsite just below it if you are on a bike or hiking tour.
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An epic road bike climb that not very difficult & has stunning views as you ascend
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Friendly cafe in high street, good coffee and crumpets ☕🤪
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Cefn-coed Viaduct was built in 1866 and is 770 ft (235 m) long and 120 ft (36.6 m) high. It is a rusticated-limestone structure of fifteen arches, set on a curve. The tall, slender piers and parapets are constructed with coursed irregular sized rock-faced limestone blocks
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The Cefn-coed Viaduct is the third-largest viaduct in Wales. This huge, curved structure once carried the Brecon and Merthyr Tydfil Junction Railway and is now part of the Taff Trail, which is Route 8 of the National Cycle Network that runs between Cardiff and Brecon. It offers walkers and cyclists a superb view of the Taf Fawr as it cascades over the many weirs in the valley
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Starting in the outskirts of Rhigos, this climb takes you past former mining areas and up to the top of Hirwaun Common. The climb passes the fomer Tower Colliery – which used to be the oldest working deep coal mine in the UK but closed in 2008. The climb gives both a feeling of industrial heritage but later the sweeping views of the Hirwaun Common. The first few km are fairly straight but near the summit, there are two switchback hairpins which add an alpine feel to this long-steady climb.
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A very pretty and accessible dam, the spillover makes it a lovely scenic addition to your loop of the reservoir or the nearby forest. There are lovely picnic areas on the way around the dam, some eating spots by way of a roadside 'scoff' van in a nearby lay-by on the eastern shore, and the cafe at Garwnant Visitor Centre on the north side of the reservoir.
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There are over 120 road cycling routes around Mountain Ash West, offering a wide variety of options for different skill levels and preferences.
Road cycling routes in Mountain Ash West feature a diverse landscape of river valleys, reservoirs, and significant climbs. You'll encounter a mix of open roads and areas bordering natural reserves, with ascents leading to scenic viewpoints and descents through wooded areas.
Yes, Mountain Ash West offers several easier road cycling routes. There are 9 routes specifically categorized as easy, providing a gentler introduction to the region's cycling. For example, the Rhigos Mountain Viewpoint – Rhigos Climb Viewpoint loop from Cwmbach is a moderate option that can be adapted for a less strenuous ride.
Absolutely. For experienced cyclists seeking a challenge, Mountain Ash West has 40 difficult road cycling routes. These often include significant climbs and longer distances, such as the Café Velo – Smooth Tarmac Cycleway loop from Cwmbach, which covers over 96 km with substantial elevation gain.
Yes, the region is well-suited for long-distance road cycling. Many routes extend beyond 50 km, with some, like the Café Velo – Smooth Tarmac Cycleway loop from Cwmbach, reaching nearly 100 km, offering extensive rides through varied landscapes.
Many of the road cycling routes in Mountain Ash West are designed as loops, allowing you to start and finish at the same point. Examples include the Smooth Tarmac Cycleway – Rhigos Climb Viewpoint loop from Cwmbach and the Penrhos Cutting Cycle Path – Castle Coch Descent loop from Merthyr Vale.
Road cycling routes in Mountain Ash West often pass by significant natural landmarks. You can encounter peaks like Cefn Eglwysilan Trig Point and Twyn Brynbychan Trig Point, offering expansive views. Many routes also feature reservoirs, such as the area around Lluest-wen Reservoir Dam Wall, and the scenic Pontsarn Blue Pool.
The road cycling experience in Mountain Ash West is highly rated by the komoot community, with an average score of 4.2 stars from over 30 reviews. Cyclists often praise the varied terrain, from challenging climbs to scenic descents, and the opportunity to explore river valleys and reservoir circuits.
Spring and autumn generally offer the most pleasant conditions for road biking in Mountain Ash West, with milder temperatures and vibrant scenery. Summer can also be excellent, though some climbs might feel more strenuous in warmer weather. Winter riding is possible but requires appropriate gear for potentially wet and colder conditions.
Yes, many routes are designed to pass through or near towns and villages where you can find cafes and pubs. For example, the Café Velo – Smooth Tarmac Cycleway loop from Cwmbach explicitly mentions a cafe in its name, indicating opportunities for refreshments along the way.
While many routes involve significant climbs, some sections of the cycle paths and quieter roads can be suitable for families. Look for routes with lower elevation gain and those that utilize dedicated cycleways, which often provide a safer and more enjoyable experience for all ages.


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