4.8
(10)
114
riders
7
rides
Gravel biking around Dyfi National Nature Reserve offers a diverse landscape within the UNESCO designated Dyfi Biosphere. The region features a mix of challenging climbs and wild gravel tracks, with terrain ranging from forest doubletrack to rocky moorland descents. Expansive conifer forests, such as Dyfi Forest, cover rugged peaks and hillsides, crisscrossed by fire roads suitable for cycling. The area also includes the Dyfi Estuary with its mudflats and sandbanks, and coastal features like the Ynyslas Dunes.
Last updated: May 5, 2026
3
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
28.1km
02:14
660m
660m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
11
riders
51.4km
04:59
960m
960m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
5.0
(1)
9
riders
48.8km
04:45
930m
930m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
5.0
(1)
41
riders
43.7km
03:41
960m
960m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Nant y Moch Reservoir is a significant water reservoir located in the Cambrian Mountains of Wales, specifically in the county of Ceredigion. It was constructed in the late 20th century and is primarily used for water supply. The reservoir is situated near the village of Llanidloes and is part of the larger infrastructure managed by Welsh Water. The area surrounding Nant y Moch Reservoir is known for its natural beauty, featuring rolling hills, moorland, and diverse wildlife. It is a popular destination for outdoor activities such as walking, birdwatching, and fishing. The reservoir itself is also used for recreational purposes, and there are walking trails around its perimeter that offer stunning views of the water and the surrounding landscape. In terms of ecology, the reservoir and its surroundings support various plant and animal species, making it an important area for conservation as well as recreation. The combination of natural beauty and recreational opportunities makes Nant y Moch a valued spot in the Welsh countryside.
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Stayed at The Wynnstay, perfect place to prepare for starting the Traws Eryri the following day...
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As soon as you leave the town, the views of the Dyfi valley and surrounding hills are superb.
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Machynlleth is a very popular, pretty and historic market town at the head of the beautiful Dyfi estuary. It is a mecca for its never ending supply of bike trails. It is also an ideal base for exploring the neighbouring countryside. The Dyfi Valley, Snowdonia National Park, Tal-y-Llyn Railway, Clywedog Reservoir, the Vale of Rheidol Railway and Devil's Bridge gorge are all within easy reach of Machynlleth.
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A prominent landmark in the centre of Machynlleth, the Clock Tower was built in 1874 to mark the coming of age of the eldest son of the Fifth Marquess of Londonderry. It marks the southern termination of the Snowdonia Way long-distance trail. For supplies, there are plenty of places to stock up in the town.
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have done the mach 2 and 3 loved the mach2 would not do the mach3 again just a lot of fire roads
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Great view, hills coming up!!
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There are 8 gravel bike trails available in Dyfi National Nature Reserve. All of these routes are categorized as difficult, offering a challenging experience for experienced riders.
The terrain in Dyfi National Nature Reserve is highly varied, ranging from forest doubletrack and wide gravel tracks within the extensive Dyfi Forest to rocky moorland descents and undulating singletrack. Many routes feature characteristically rocky Welsh gravel roads and byways, making them suitable for year-round riding. You can expect challenging climbs and wild gravel tracks throughout the region.
The gravel bike trails in Dyfi National Nature Reserve are primarily suited for experienced riders. All 8 routes listed in this guide are rated as difficult, featuring significant elevation gain and varied, often rocky, terrain. For example, the Bwlch Nant Glas Gravel Climb – Moel y Llyn Gravel Climb loop from Tal-y-bont involves over 860 meters of ascent.
Gravel routes in the Dyfi Valley often feature significant elevation gain, contributing to their challenging nature. For instance, the Nant y Moch loop from Machynlleth — Cambrian Mountains includes over 960 meters of ascent, while the Machynlleth Clock Tower – Tony the Tiger Trail loop from Machynlleth has nearly 960 meters of climbing.
The Dyfi National Nature Reserve offers stunning natural features and viewpoints. Many routes provide sweeping views over the Dyfi estuary and surrounding conifer forests. You might encounter the Ynyslas Dunes Viewpoint, the vast mudflats and sandbanks of the Dyfi Estuary, or the scenic Nant-y-Moch reservoir. The area is also home to Cors Fochno, one of Britain's finest raised peat bogs, and the Afon Leri river.
Yes, parking is generally available in and around the Dyfi National Nature Reserve, particularly at popular starting points for trails and near visitor centers like the Ynyslas Visitor Centre. Specific parking details often depend on the individual route's starting location, so it's advisable to check local information for your chosen trail.
Public transport options in the Dyfi Valley include local bus services and train lines that connect towns like Machynlleth. While some routes may be accessible via public transport, it's recommended to research specific connections to your chosen trailheads, as services can be limited in more remote areas. Bringing bikes on public transport may also have restrictions.
The Dyfi National Nature Reserve's gravel roads are known for being characteristically rocky, making them suitable for year-round riding. However, for the most pleasant conditions, late spring to early autumn (May to October) generally offers milder weather and longer daylight hours. Winter riding is possible but can be more challenging due to colder temperatures and potentially wetter, muddier conditions.
Yes, many of the gravel routes in Dyfi National Nature Reserve are circular, allowing you to start and end at the same point. Examples include the Bwlch Nant Glas Gravel Climb – Moel y Llyn Gravel Climb loop from Tal-y-bont and the Mach 1, 2, and 3 Loop, both offering extensive circular tours through the varied landscape.
Given that all routes in this guide are rated as difficult, featuring significant elevation and challenging terrain, they may not be suitable for young children or families seeking very easy, flat paths. The region is more geared towards experienced gravel bikers. For family-friendly options, you might need to look for shorter, less technical sections or dedicated cycle paths outside of the main challenging gravel routes.
While many outdoor areas in Wales are dog-friendly, specific regulations can apply within the Dyfi National Nature Reserve and Dyfi Forest, especially concerning livestock and wildlife protection. It's generally recommended to keep dogs on a lead on shared paths and to check local signage or specific route guidelines. Always ensure your dog is well-behaved and doesn't disturb other users or wildlife.
The area is highly rated by the komoot community, with an average score of 4.9 stars from over 10 reviews. Reviewers often praise the challenging climbs, the wild and diverse terrain, and the expansive mountain and valley views, particularly over the Dyfi estuary and surrounding conifer forests. The sense of adventure on the well-established cycling infrastructure is also a common highlight.


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