5.0
(6)
100
riders
9
rides
Gravel biking around Pennal offers routes through the varied landscapes of the Cambrian Mountains, characterized by rolling hills, forested valleys, and open moorland. The region features a network of trails suitable for gravel bikes, often utilizing forest roads and quieter country lanes. Elevations can be significant, with routes frequently including substantial climbs and descents. The terrain provides a mix of surfaces, from compacted gravel to more rugged paths.
Last updated: May 22, 2026
5.0
(1)
11
riders
51.4km
04:59
960m
960m
Embark on the Nant y Moch loop from Machynlleth, a difficult gravel biking adventure spanning 31.9 miles (51.4 km) with a significant 3164 feet (964 metres) of elevation gain. This route, which typically takes around 4 hours and 59 minutes, treats you to expansive mountain and valley views, including the picturesque Nant y Moch Reservoir. You will navigate a variety of surfaces, from a spectacular 'balcony' gravel road and thrilling forested descents to rocky doubletrack around the reservoir and slate tracks, often encountering wet sections and large puddles.
This challenging ride demands very good fitness, as some segments may even require you to push your bike. While it offers a good challenge on a gravel bike, it is not unrideable for those prepared for its demands. Ensure you are well-equipped for varied terrain and potential wet conditions, even in summer, to fully enjoy the diverse landscapes of the Cambrian Mountains.
The Nant y Moch loop is celebrated as one of Wales's best double track trails for gravel riders, with the rocky doubletrack around the reservoir being a particular highlight. Situated within the UNESCO-designated Dyfi Biosphere Reserve, the trail showcases the natural beauty of rolling hills and moorland. The Cambrian Mountains are recognized as a premier destination for gravel riding in the UK, and this route exemplifies the region's appeal for adventurous cyclists.
5.0
(1)
9
riders
48.8km
04:45
930m
930m
Embark on the Mach 1, 2, and 3 Loop, a difficult gravel biking adventure spanning 30.4 miles (48.8 km) with a significant 3067 feet (935 metres) of elevation gain. This route takes you deep into the Plynlimon mountains, offering a true sense of wilderness and isolation. You'll navigate open, exposed trails that provide expansive views of forestry, valleys, and distant peaks. Keep an eye out for red kites soaring above, particularly along the Valley Balcony Gravel Track, a highlight of this nearly 4-hour and 44-minute journey. The combination of three distinct loops ensures a comprehensive experience.
Planning for this difficult route requires preparation. The Mach 1, 2, and 3 Loop primarily follows natural tracks and gravel roads, leading you into remote areas. Specifically, the Mach 3 section ventures deep into the Northern Cambrian Mountains, where services are non-existent. Make sure to pack ample snacks and water, as you won't find any refueling options along the way. A strong level of fitness and good mountain-sense are essential to safely complete this challenging gravel biking experience.
This route stands out for its comprehensive exploration of the Welsh mountains, combining three distinct loops into one challenging ride. It offers a unique opportunity to experience the wild beauty of the Plynlimon range, with its varied terrain and sweeping vistas. The trail's remote nature means you will encounter few others, allowing for a truly immersive journey through this rugged landscape.

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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.
5.0
(2)
15
riders
69.5km
05:09
1,490m
1,490m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
10
riders
20.1km
01:57
590m
590m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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If you smile sweetly you don’t have to pay. There are also public toilets just after this.
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First, a somewhat adventurous ride on the single track to the parking lot, which costs £5. The easy loop around the lake is very beautiful and relaxing – the sheep roam freely, but they keep their distance. Dogs must be on a leash, of course, but that's not a problem. Enjoy it – and if you're up for more, go for a longer loop. There are a few tables and benches above the parking lot for your picnic. You won't find any litter baskets, so you'll have to take them with you – which is perfectly fine, as it's a nature reserve. Highly recommended.
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Card payments are accepted. The bridge is open to cyclists and walkers 24/7. There is a slot for the toll in the door outside of operating hours.
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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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They do take card payments so that’s been an update but it’s not open 24 hrs
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Make sure you have cash for the toll - no card payment here😉
2
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A lovely track to ride along the estuary. Suitable for any bike
0
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Great mountain road, rideable on a gravel, comfortable on an MTB
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There are over 10 gravel bike routes available around Pennal, offering a variety of experiences through the Cambrian Mountains. These trails are highly rated by the komoot community.
While many routes in Pennal are rated as difficult due to significant climbs and rugged terrain, there are options that can be approached by less experienced riders with caution. The region is generally known for its challenging, advanced routes, so beginners should carefully review route profiles before setting out.
Advanced riders seeking longer, more demanding routes will find several options. Consider the Black Road Gravel Pass – Cregennan Lakes loop from Esgairgeiliog Ceinws, which is 43.2 miles (69.5 km) and features extensive climbs. Another challenging option is the Nant y Moch loop from Machynlleth — Cambrian Mountains, covering 31.9 miles (51.4 km) through rugged terrain.
Yes, many of the gravel bike routes around Pennal are circular, allowing you to start and end at the same point. Examples include the Mach 1, 2, and 3 Loop and the Machynlleth Clock Tower – Tony the Tiger Trail loop from Machynlleth, both offering varied landscapes and panoramic views.
The varied landscapes of Pennal, with its rolling hills and open moorland, are beautiful year-round. However, for the most comfortable riding conditions, late spring to early autumn (May to September) generally offers milder weather and drier trails. Be prepared for potentially wet and windy conditions, especially at higher elevations, regardless of the season.
Pennal's weather can be unpredictable, typical of the Welsh countryside. Expect a mix of sun, cloud, and rain, even within a single day. The terrain can become muddy and slippery after rainfall, especially on more rugged paths. Always check the local forecast before heading out and be prepared for changing conditions.
While the routes often traverse remote areas of the Cambrian Mountains, you'll find opportunities for refreshments in nearby towns like Machynlleth or Corris. It's advisable to carry sufficient water and snacks, especially on longer routes like the Idris Stores – Corris loop from Esgairgeiliog Ceinws, as amenities can be sparse directly on the trails.
The Pennal region offers stunning natural beauty. Many routes provide panoramic views of the Welsh countryside. You might encounter highlights such as Llyn Cau or Tarren Hendre Summit, offering breathtaking vistas. The Black Road Gravel Pass – Cregennan Lakes loop specifically passes by the scenic Cregennan Lakes.
The area is highly rated by the komoot community, with an average score of 5.0 stars from 6 reviews. Reviewers often praise the challenging climbs, extensive forest roads, and the scenic views of the Welsh countryside, highlighting the rewarding experience of exploring the varied terrain.
While specific parking information varies by route, many trails can be accessed from towns like Machynlleth or smaller villages in the surrounding area. Look for public car parks in these locations, or check the individual route descriptions on komoot for suggested starting points and parking options.
The region is home to several beautiful lakes and natural water features. While not directly on every gravel route, highlights like Llyn Barfog (Bearded Lake) and Llyn Cau are notable natural monuments in the area that might offer opportunities for wild swimming, though always check local regulations and safety advice before entering the water.


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