4.7
(73)
1,118
riders
48
rides
Touring cycling routes around Llyn Nantlle Uchaf traverse a landscape characterized by dramatic mountain scenery, including views of Snowdon and the Nantlle Ridge. The area features a picturesque lake and a valley shaped by its slate quarrying heritage. Dedicated cycleways, such as the Lôn Eifion Cycleway and the Lonydd Glas network, provide traffic-free and scenic options for cyclists. The terrain ranges from quiet valley routes to more challenging mountain roads, often on mostly paved surfaces.
Last updated: June 27, 2026
7
riders
28.9km
01:53
390m
390m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(11)
87
riders
36.3km
02:18
400m
400m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.0
(1)
17
riders
63.0km
03:51
570m
560m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
4
riders
36.9km
02:24
450m
450m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
5
riders
36.0km
02:17
390m
390m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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The bridge was probably built in the 17th century and then radically rebuilt and widened in 1795-1796. As with many older bridges, folk tales claimed that the bridge was built by the devil or by the Romans (which an investigation by the National Trust described as "very doubtful"). During the reconstruction, a stone was found with the inscription "W M 1656" scratched on it, suggesting that the bridge is at least that old. Pont Aberglaslyn is located near the downstream end of the Aberglaslyn Pass. Although the location is rocky and the river flows through rapids upstream, it is not far above sea level. (Wikipedia)
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There are many, many ways up Yr Wyddfa (Snowdon), though the Watkin Path is one of the six trails officially recognised by the national park authority. It's a quieter option than the routes from Llanberis and Pen y Pass and also one of the most strenuous. It was also the first public footpath in the UK when it was inaugurated in 1892 by Prime Minister William Gladstone.
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Beginning of Watkins' path
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Beddgelert is a lovely village below Moel Hebog, and the bridge over the river is a key feature.
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The old well of St Bueno an information board is by the road. https://wellhopper.wales/2013/01/23/ffynnon-beuno-clynnog-fawr/
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This is a pretty cycleway out of Caernarfron with gorgeous views across to Anglesy.
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There are over 50 touring cycling routes available in the Llyn Nantlle Uchaf area, catering to various skill levels. You'll find a good mix of easy, moderate, and challenging options to explore the region's stunning landscapes.
Cyclists in the Llyn Nantlle Uchaf area are treated to dramatic mountain scenery, including breathtaking views of Snowdon (Yr Wyddfa) and the formidable Nantlle Ridge. The routes often feature the picturesque lake itself, quiet valleys, and reminders of the region's rich slate quarrying heritage, such as the Dorothea Quarry.
Yes, the region offers excellent dedicated cycle paths. The Lôn Eifion Cycleway is a popular, wide, tarmacked, and largely traffic-free route that runs south from Caernarfon, often alongside the Welsh Highland Railway. Additionally, Gwynedd county, where Llyn Nantlle Uchaf is located, features the Lonydd Glas network, providing over 50 kilometers of safe, traffic-free routes, many on disused railway lines.
Absolutely. The Lôn Eifion Cycleway, with its wide, traffic-free, and mostly tarmacked surface, is ideal for families. The broader Lonydd Glas network also offers many easy-to-find and free-to-use paths suitable for all ages. For more general information on family-friendly cycling in Wales, you can visit Visit Wales.
Yes, many of the touring cycling routes in the area are designed as loops, allowing you to start and finish in the same location. An example is the St Beuno's Well – View of Mount Foel loop from Nebo, which offers diverse scenery and views.
The routes around Llyn Nantlle Uchaf cater to a range of abilities. You'll find approximately 11 easy routes, 32 moderate routes, and 10 more difficult routes. This variety ensures that both casual riders and experienced touring cyclists can find suitable challenges.
The touring cycling routes in Llyn Nantlle Uchaf are highly rated by the komoot community, with an average score of 4.7 stars from over 60 reviews. Cyclists often praise the dramatic mountain backdrops, tranquil lake views, and the blend of quiet valley rides with more challenging ascents.
Yes, the region's slate quarrying heritage is a significant feature. You can encounter sites like the Dorothea Quarry, with its slate-veined pits and deep pools, which offer a glimpse into the area's industrial past. Some routes, like the Caernarfon Castle – Lôn Eifion Cycleway loop, also pass near historic landmarks such as Caernarfon Castle.
While cycling is possible year-round, late spring to early autumn (May to October) generally offers the most favorable weather conditions for touring cycling in Llyn Nantlle Uchaf. During these months, you can expect milder temperatures and less rainfall, making for more enjoyable rides amidst the stunning scenery.
Many routes in the Llyn Nantlle Uchaf area provide spectacular mountain vistas. You can expect 'perfect views' of Snowdon (Yr Wyddfa), Wales' highest peak, and the impressive Nantlle Ridge. Routes like the Caernarfon Cycle Path – Caernarfon Castle loop and those incorporating the Lôn Eifion Cycleway often feature these iconic backdrops.
Parking availability varies depending on your chosen starting point. Many villages and trailheads in the Nantlle Valley and surrounding areas offer public car parks. It's advisable to check specific route descriptions or local information for the most convenient parking options near your desired cycling route.
The Llyn Nantlle Uchaf area, while secluded, has villages and towns nearby that offer opportunities for refreshment. Depending on your chosen route, you may find cafes or pubs in places like Beddgelert or Caernarfon, especially along routes that connect to these larger settlements. It's always a good idea to carry some snacks and water, especially on longer rides.


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