5.0
(4)
73
riders
5
rides
Gravel biking around Tywyn offers routes through the varied landscapes of Mid Wales, characterized by rolling hills, forested valleys, and open mountain passes. The region features challenging climbs and descents, often on unpaved forest roads and gravel tracks. Riders can expect a mix of terrain, from river valleys to higher elevations within the Cambrian Mountains.
Last updated: May 6, 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
(1)
8
riders
25.6km
02:00
710m
710m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Well worth taking a short break here to take in the view...may even get sight of low flying aircraft as it's close to the Mach Loop.
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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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Great mountain road, rideable on a gravel, comfortable on an MTB
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Stayed at The Wynnstay, perfect place to prepare for starting the Traws Eryri the following day...
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For the circular route around Allt-lwyd there are some boulder like sections very difficult on a gravel bike on the north side climb. I’d recommend using the other south side of the hill for the climb (tarmac to top) and at least the worst sections can be done downhill. You’ll still have one tricky uphill bit though. Can get wet w/ deep puddles after extended rain.
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This is the first proper off-road section on Traws Eryri heading north. If you're riding an MTB with nice big tyres it's a blast, but if you're on a gravel bike, it's a long, picky descent.
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Gravel biking around Tywyn offers a challenging experience through the varied landscapes of Mid Wales. You'll encounter rolling hills, forested valleys, and open mountain passes, with significant elevation gains on unpaved forest roads and gravel tracks. The routes are generally demanding, catering to experienced riders.
The gravel bike routes directly around Tywyn are generally rated as difficult, featuring challenging climbs and descents. Currently, there are no routes specifically categorized as easy or family-friendly within this guide. Riders should be prepared for demanding terrain.
The gravel bike trails around Tywyn typically range from approximately 25 km to over 50 km in length. Due to the challenging terrain and significant elevation, durations can vary from about 2 hours for shorter routes to nearly 5 hours for longer ones. For example, the Nant y Moch loop from Machynlleth — Cambrian Mountains is 51.4 km and takes nearly 5 hours.
Yes, all the featured gravel bike routes around Tywyn are designed as loops. This includes popular options like the Mach 1, 2, and 3 Loop and the Machynlleth Clock Tower – Tony the Tiger Trail loop from Machynlleth, allowing you to start and finish at the same point.
The region offers numerous scenic spots. You might encounter viewpoints like Tarren Hendre Summit or Cwm Llinos. Natural attractions include Upper Dolgoch Waterfall, the mystical Llyn Barfog (Bearded Lake), and the iconic Craig Aderyn (Bird Rock). The Black Road Gravel Pass – Craig Aderyn (Bird Rock) loop from Llwyngwril specifically passes by Craig Aderyn.
The gravel biking routes around Tywyn are highly regarded by the komoot community, holding an average rating of 5.0 stars from over 4 reviews. Riders often praise the challenging nature of the trails and the stunning, varied landscapes of Mid Wales.
While all routes offer unique experiences, the Bwlch Nant Glas Gravel Climb – Moel y Llyn Gravel Climb loop from Tal-y-bont might be considered a hidden gem. It offers a substantial challenge with significant climbs through beautiful, less-trafficked areas, providing a rewarding sense of discovery.
The best time for gravel biking in Tywyn is typically from late spring to early autumn (May to October) when the weather is generally milder and drier. However, conditions can change rapidly in the Welsh mountains, so always check the forecast before heading out. Autumn can offer beautiful foliage but also wetter, cooler conditions.
Expect a diverse mix of terrain. You'll ride on unpaved forest roads, gravel tracks, and potentially some sections of quieter tarmac connecting the off-road parts. The routes are characterized by significant elevation changes, from river valleys to higher elevations within the Cambrian Mountains, demanding good bike handling skills and fitness.
The primary challenge in Tywyn is the significant elevation gain and the often remote nature of the trails. Riders should be prepared for sustained climbs and descents. It's advisable to carry sufficient water, food, and repair supplies, as amenities can be sparse on some sections. Always check weather conditions, as they can be unpredictable in the mountains.
While the routes themselves traverse remote and natural landscapes, many start or pass near towns like Machynlleth or Llwyngwril, where you can find pubs, cafes, and shops for refueling before or after your ride. Planning your stops in advance is recommended, especially on longer routes like the Nant y Moch loop.


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