4.6
(93)
394
riders
6
rides
Gravel biking around Llyn Eigiau offers routes within a glaciated valley on the edge of the Carneddau mountain range in Snowdonia National Park. The region features a rugged and remote landscape with diverse terrain, including flat gravel roads, tracks composed of dirt and rough stone, and sections with significant elevation changes. The gravel roads and byways are often rocky, providing suitable conditions for year-round riding.
Last updated: May 21, 2026
3
riders
29.5km
02:30
900m
900m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
9
riders
27.4km
02:17
620m
610m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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3
riders
20.7km
01:39
430m
430m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
6
riders
11.4km
01:05
230m
230m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(2)
11
riders
64.8km
04:29
1,130m
1,130m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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a short cut to the top following the yellow trail, nice and steep with slab rock and roots on the descent
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Nothing especially tricky or difficult, as long as you have vaguely "gravel" tyres you'll be fine. Stunning views along the way, I prefer the heading west views but it is pretty both ways.
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This is a serene lake located in the Conwy Valley surrounded by forested hills and the rugged landscape of Snowdonia. There's a cafe and fishery further south along the lake which is a lovely place to stop and refuel.
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Gravel biking in Llyn Eigiau offers a range of routes from moderate to difficult. You'll encounter varied terrain, including flat gravel roads, tracks composed of dirt and rough stone, and sections with significant elevation changes. For example, the Eigiau Valley Gravel Road – Eigiau Dam Ruins loop from Llanrhychwyn is considered difficult, while the Llyn Sarnau Fire Roads – Llyn Parc loop from Llanrhychwyn is a moderate option.
Yes, many of the gravel bike routes in Llyn Eigiau are designed as loops, allowing you to start and finish in the same location. For instance, the challenging Llyn Crafnant – Llyn Ogwen and Ogwen Obelisk loop from Trefriw and the moderate Llyn Parc – Llyn Geirionydd loop from Trefriw are both excellent circular options.
Llyn Eigiau is renowned for its bleak yet beautiful mountain scenery, offering a sense of wilderness and solitude. You'll enjoy extensive views of the surrounding mountains and the Llyn Eigiau lake itself. On clear days, you might even spot the coastline in the distance. The area also features historical elements like the remnants of a 1911 dam and old mine workings in Cwm Eigiau.
The gravel roads and byways in Llyn Eigiau are often rocky rather than muddy, which can make for good year-round riding conditions. However, for the most pleasant experience and best views, spring through autumn generally offers more predictable weather.
While many routes in Llyn Eigiau are moderate to difficult with significant elevation changes, there are sections with flatter gravel roads, particularly near car parks, that might be suitable for families with some biking experience. Always check the route details and difficulty before setting out with children.
Llyn Eigiau is within Snowdonia National Park, and generally, dogs are welcome on trails if kept under control, especially around livestock and wildlife like the wild Carneddau ponies. Always follow the Countryside Code and be mindful of other users and the natural environment.
Parking is typically available near the starting points of many routes. For example, routes like the Eigiau Valley Gravel Road – Eigiau Dam Ruins loop often start from villages like Llanrhychwyn, which would have designated parking areas. It's advisable to check specific route details for precise parking information.
Given the varied terrain, which includes rugged paths, dirt and rough stone tracks, and some steep ascents and descents, a well-maintained gravel bike with appropriate tires for mixed surfaces is recommended. Helmets are essential, and carrying repair kits, sufficient water, and layers of clothing suitable for changing mountain weather is always wise.
Llyn Eigiau is known for its remote and wild character, offering a sense of solitude. Direct amenities like cafes or pubs are limited right at the lake. However, nearby villages such as Trefriw or Llanrhychwyn, which serve as starting points for some routes, will offer more options for refreshments and accommodation.
The duration varies significantly depending on the route's length and difficulty. For example, the challenging Eigiau Valley Gravel Road – Eigiau Dam Ruins loop is estimated to take around 2 hours and 39 minutes, while the shorter, moderate Llyn Sarnau Fire Roads – Llyn Parc loop can be completed in about 1 hour and 13 minutes.
The area is highly rated by the komoot community, with an average score of 4.5 stars. Reviewers often praise the remote mountain scenery, the sense of wilderness, and the diverse terrain that makes for a challenging and rewarding gravel biking experience. The historical dam ruins and the chance to spot wild Carneddau ponies also add to the unique appeal.


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