5.0
(5)
166
riders
04:40
91.6km
1,220m
Road cycling
The Snowdon Circuit is a difficult road cycling route, stretching 56.9 miles (91.6 km) with a significant elevation gain of 3993 feet (1217 metres). You can expect to complete this challenging ride in about 4 hours and 40 minutes. As you pedal, you will pass picturesque lakes like Llyn Dinas…
Last updated: April 23, 2026
Waypoints
Start point
Parking
Get Directions
25.8 km
Highlight • Natural
Tip by
63.5 km
Highlight • Cafe
Tip by
72.7 km
Highlight (Segment) • Climb
Tip by
91.6 km
End point
Parking
Way Types & Surfaces
Way Types
64.3 km
22.9 km
2.34 km
1.99 km
< 100 m
Surfaces
69.9 km
21.3 km
413 m
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Elevation
Highest point (360 m)
Lowest point (10 m)
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Weather
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Tuesday 5 May
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This route was planned by komoot.
This challenging road cycling loop is approximately 91.6 kilometers (57 miles) long. With an average duration of around 4 hours and 40 minutes, it requires a good level of fitness due to significant elevation changes.
The route primarily features well-paved surfaces. However, be aware that some segments might be unpaved and difficult, potentially requiring you to dismount and push your bike. The loop includes demanding sections like the climb to Llanberis Pass – Pen-y-Pass Climb, which can be around 4 kilometers long with an average gradient of 6.2% and parts reaching 10% or more. Expect long, steady climbs followed by exhilarating, fast descents.
No, this road cycling loop is classified as 'difficult' and demands a very good fitness level due to its length and significant elevation gain of approximately 1,217 meters (4,000 feet). It is not recommended for beginner cyclists.
You can expect consistently stunning and beautiful scenery throughout the loop. The route offers breathtaking views of Snowdon, Wales' highest mountain, along with picturesque lakes such as Llyn Dinas, Llyn Gwynant, Llyn Cwellyn, and Llanberis Lake. You'll traverse mountainous landscapes and valleys, with the dramatic geological features of Snowdonia National Park as a constant backdrop.
Yes, the route passes by several notable features. You'll cycle past the beautiful Llyn Dinas and tackle the challenging Llanberis Pass – Pen-y-Pass Climb. The Pen-y-Pass area itself is a significant starting point for walking paths to Snowdon's summit and offers excellent vantage points of the surrounding Snowdon Horseshoe.
The best time to cycle this route is generally during the warmer, drier months to avoid the harsher weather conditions that can affect Snowdonia National Park. However, be aware that the area can get very busy during peak seasons like summer and school holidays, especially around Pen y Pass.
Parking is available at Pen y Pass, though it can be very busy, especially during peak seasons. It's advisable to arrive early or consider alternative parking options and public transport if available, particularly during summer and school holidays.
Yes, there are facilities available. For instance, you'll find Pete's Eats Cafe, which is a well-known spot. The Pen y Pass area also typically has facilities. It's always a good idea to check opening times, especially outside of peak season.
Yes, this route intersects with several other paths. Notably, it covers sections of the Snowdonia Slate Trail (12%), Lôn Gwyrfai (9%), and the Cambrian Way (5%). You'll also find smaller segments of trails like Lôn Las Peris, Welsh Three Thousands, and EuroVelo 2 - Capitals Route - part United Kingdom 1.
While dogs are generally welcome in Snowdonia National Park, specific rules apply to cycling routes. As this is a road cycling route, dogs would need to be safely secured in a trailer or carrier. Always ensure your dog is under control and respect any local signage regarding livestock or protected areas.
There is no general entrance fee or permit required for cycling on public roads and designated cycle paths within Snowdonia National Park. However, standard parking fees may apply at specific car parks, such as Pen y Pass. Always adhere to the Countryside Code and any local regulations.