4.7
(11)
1,205
riders
6
rides
Road cycling around Llyn Llydaw is characterized by rugged mountain scenery, deep green valleys, and craggy peaks within Snowdonia National Park. The area features mostly paved surfaces, offering routes with significant elevation gains and challenging climbs. Llyn Llydaw itself is a glacial lake, providing a focal point amidst the dramatic Welsh landscape. The terrain includes notable landmarks and offers panoramic views of the surrounding mountains.
Last updated: July 12, 2026
24
riders
24.9km
01:35
600m
600m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
6
riders
28.2km
02:00
500m
500m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

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10
riders
42.3km
02:20
570m
570m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
6
riders
43.4km
02:16
750m
750m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
4
riders
20.4km
01:40
510m
510m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
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Popular around Llyn Llydaw
the old railway line is flat and gets you off the main road.
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This is a class section, often used by MTB and Road bikers. If you look closer you can see where?
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Nice cafe with indoor and outdoor seating, good coffee and cake
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Always a pleasure to ride around this area with the castle as a back drop.
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Castell Caernarfon is recognised around the world as one of the greatest buildings of the Middle Ages. This fortress-palace on the banks of the River Seiont is grouped with Edward I’s other castles at Conwy, Beaumaris and Harlech as a World Heritage Site. But for sheer scale and architectural drama Caernarfon stands alone. Here Edward and his military architect Master James of St George erected a castle, town walls and a quay all at the same time. This gigantic building project eventually took 47 years and cost a staggering £25,000. The castle was born out of bitter war with Welsh princes. So of course its immense curtain walls and daunting King’s Gate were designed to withstand assault. But the polygonal towers, eagle statues and multi-coloured masonry sent a more subtle message.
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Beautiful quiet lanes with a fantastic view over Bethesda and the mountains
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There are currently 6 moderate no-traffic road cycling routes available around Llyn Llydaw, all designed for racebikes. These routes offer a great way to explore the stunning Snowdonia landscape without vehicle interference.
The terrain around Llyn Llydaw for road cycling is characterized by mostly paved surfaces, offering challenging climbs and rewarding descents. You'll experience significant elevation changes, with routes often skirting the base of the Snowdon Horseshoe, providing panoramic views. While these routes are designed to be traffic-free, the mountainous environment means you should be prepared for varied gradients.
Yes, all the no-traffic road cycling routes listed for the Llyn Llydaw area are circular loops. For example, you could try the View of Llyn Peris – Marchlyn Mawr Reservoir Climb loop from Llanberis, which offers a substantial climb and scenic views, or the Lodge Dinorwig – Waterfalls on the River Ogwen loop from Llanberis for a ride featuring natural water features.
The routes offer incredible views of the rugged mountain scenery, including Snowdon itself, and glimpses of the coastline. You'll often see the stunning glacial lake Llyn Llydaw. Some routes pass by historical sites like the Ruins of the Britannia Copper Mine at Llyn Llydaw, offering a glimpse into the region's industrial past. You might also encounter waterfalls, such as those on the River Ogwen, depending on your chosen route.
All the no-traffic road cycling routes around Llyn Llydaw are rated as moderate difficulty. This means they are suitable for cyclists with a good level of fitness, often involving significant elevation gains and distances ranging from approximately 20 km to over 40 km. While traffic-free, the mountainous terrain ensures a challenging and rewarding experience.
Yes, if you're looking for routes with waterfalls, consider the Lodge Dinorwig – Waterfalls on the River Ogwen loop from Llanberis. This route specifically highlights waterfalls on the River Ogwen, adding a beautiful natural element to your ride.
The komoot community highly rates the no-traffic road cycling routes around Llyn Llydaw, with an average score of 4.7 stars. Reviewers often praise the breathtaking panoramic views of the Snowdonia landscape, the challenging climbs, and the peace of mind that comes with cycling on roads free from vehicle traffic. The dramatic peaks and glacial lakes like Llyn Llydaw are frequently highlighted as visual treats.
Absolutely. Many routes in the area provide stunning views of Snowdon, Wales' highest mountain. For a route specifically highlighting this, you could explore the View of Snowdon – Bwlch y Groes (Reverse) loop from Llanberis, which offers excellent vantage points of the majestic peak.
Yes, for a ride that combines scenic cycling with a significant historical landmark, you can take the Caernarfon Castle – Caernarfon Castle loop from Llanberis. This route will lead you past the impressive Caernarfon Castle, offering a cultural highlight during your ride.
The Llyn Llydaw area, being part of Snowdonia National Park, is best enjoyed for road cycling during the warmer and drier months, typically from late spring to early autumn. This period offers more stable weather conditions, clearer views, and longer daylight hours, making the challenging climbs and descents more enjoyable. Always check local weather forecasts before heading out, as mountain weather can change rapidly.
Yes, some routes offer beautiful views of Llyn Peris. You might consider the View of Llyn Peris – Ford Crossing with Footbridge loop from Llanberis, which provides scenic vistas of this lake as part of its journey.


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