4.6
(2943)
26,935
hikers
241
hikes
Family friendly hiking trails around Llyn Eigiau are situated within a glaciated valley on the edge of the Carneddau mountain range in Snowdonia, Wales. The region is characterized by rugged mountain scenery, the bleak beauty of Llyn Eigiau lake, and the historical remnants of the 1911 dam. Trails follow tracks through Cwm Eigiau, offering views of the surrounding peaks and valleys.
Last updated: October 29, 2026
23
hikers
5.50km
01:25
30m
30m
Easy hike. Easily walkable paths.
4.5
(2)
21
hikers
10.6km
02:53
160m
160m
Moderate hike. Good fitness required. Easily walkable paths.

5.0
(2)
10
hikers
15.6km
04:57
620m
630m
Moderate hike. Good fitness required. Easily walkable paths.
4.8
(28)
179
hikers
15.0km
04:24
400m
400m
Moderate hike. Good fitness required. Easily walkable paths.
4.8
(6)
75
hikers
12.5km
04:06
570m
570m
Moderate hike. Good fitness required. Easily walkable paths.
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The top of a long rough ridge, giving spectacular views into the Ogwen Valley.
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Another top on this long bumpy ridge that leads to Creigiau Gleision.
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Thanks to this wooden bridge you can easily cross the stream. Even the sheep use this bridge.
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The reservoir was originally built in 1924 to supply water for the hydro-electric power station in Dolgarrog, which in turn powered an aluminium smelting works. This power station is still operational today. Coedty Reservoir is historically significant due to its involvement in the devastating Dolgarrog Dam Disaster of 1925. The failure of the Llyn Eigiau dam, located upstream, led to a surge of water that also breached the Coedty dam. This resulted in a catastrophic flood that swept through the village of Dolgarrog, causing the loss of 16 lives. Coedty dam is a "balance tip" dam, meaning water flows from it automatically when it reaches high levels. This excess water flows into a spectacular gorge below, which is used by outdoor pursuit groups. However, gorge walking here can be dangerous due to the sudden releases of water.
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Such a perfect spot. They've resurfaced the route over to Llyn Crafnant and it's now a largely smooth gravel track.
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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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A very peaceful section of quite a tough hike. The weather was horrific, a few slips and falls along the way. All good fun though. Worth it as the views from on top of crimpau are stunning.
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Llyn Eigiau offers a wide selection of routes suitable for families. You'll find over 230 hiking trails in the area, with more than 60 specifically rated as easy, making them ideal for family outings.
The terrain around Llyn Eigiau varies, but many family-friendly routes feature well-defined tracks and gravel roads, especially in the valley. Some paths might be uneven or rocky, particularly as you venture closer to the mountains. Routes like the Eigiau Dam Ruins – Eigiau Valley Gravel Road loop offer relatively flat sections suitable for most families.
Yes, there are several circular options. For a gentle introduction, consider the Eigiau Dam Ruins – Eigiau Valley Gravel Road loop from Dolgarrog, which is an easy 5.5 km circular route. Another option that explores the valley is the Eigiau Valley Gravel Road – Eigiau Dam Ruins loop, a moderate 10.5 km circular hike.
Family hikes around Llyn Eigiau offer a blend of natural beauty and historical intrigue. You can explore the bleak yet beautiful Llyn Eigiau itself, and discover the poignant remains of the 1925 dam disaster. The area also features old slate quarries, adding a historical touch to the dramatic mountain scenery of the Carneddau range. Keep an eye out for the wild Carneddau ponies!
Yes, Llyn Eigiau is generally very dog-friendly, offering plenty of open spaces and trails for your canine companions. However, as it's a wild area, always keep dogs under close control, especially near livestock or if you encounter the wild Carneddau ponies. Remember to follow the Countryside Code and clean up after your dog.
The warmer months from late spring to early autumn (May to October) are generally the most pleasant for family hikes, offering milder weather and longer daylight hours. However, Llyn Eigiau's remote beauty can be enjoyed year-round. In winter, be prepared for colder temperatures, potentially icy conditions, and shorter days, which might require more experience and appropriate gear.
For families with toddlers, focus on the easiest, flatter sections. The initial parts of the Eigiau Dam Ruins – Eigiau Valley Gravel Road loop offer relatively flat gravel paths that are manageable for little legs or pushchairs designed for rougher terrain. Always check the route details for elevation and surface type to ensure it's suitable for your family's needs.
Parking is typically available at designated spots near the start of popular trailheads, often at the end of the public road leading into the valley. As Llyn Eigiau is a more remote area, parking facilities might be basic. Always arrive early during peak season to secure a spot, and ensure you park responsibly without obstructing access.
The komoot community highly rates the hiking experience around Llyn Eigiau, with an average score of 4.58 stars. Reviewers often praise the area's tranquil, remote 'wilderness' feel, the dramatic mountain scenery, and the historical points of interest like the dam remains. Many appreciate the less crowded atmosphere compared to other parts of Snowdonia, making it perfect for a peaceful family adventure.
Llyn Eigiau itself is quite remote, offering a true wilderness experience with limited facilities directly at the lake. For amenities like cafes, pubs, or accommodation, you would typically need to head to nearby villages such as Dolgarrog or Trefriw, which are a short drive away from the valley.
Reaching Llyn Eigiau directly by public transport can be challenging due to its remote location. While some bus services operate to nearby villages like Dolgarrog, getting to the trailheads around the lake itself often requires a car or a taxi from the nearest public transport hub. Planning ahead is essential if relying on public transport.
Llyn Eigiau is home to diverse wildlife. Keep an eye out for the iconic wild Carneddau ponies, which roam freely in the area. The lake itself hosts brown trout and a small number of Arctic char. Birdwatchers might spot various upland species. The remote nature of the area provides a great opportunity for children to connect with nature.


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