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    Glyderau Circular Walk via Castell y Gwynt

    This reflects the 10Adventures difficulty rating for each route. We aim to keep ratings consistent across regions.
    This reflects the estimated time the majority of users will take on this trail. If you are slower, add time to the top-end figure. If you are fast, then you may complete this route faster than this time range.
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    11.5 km
    This reflects the total elevation gained throughout this route as measured by the GPS file. This includes all ascents and descents, and is higher than what is quoted in most route guides, which simply measure the distance between the starting-point and high-point of the route.
    973 m
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    Glyderau Circular Walk via Castell y Gwynt

    The Glyderau are an iconic range within Snowdonia National Park, and this circular walk tackles the peaks of Y Garn, Glyder Fawr, Castell y Gwynt, and Glyder Fach. From the popular Ogwen visitor centre, head up the northeast ridge of Y Garn before looping around to clamber through the nearly lunar landscapes of Glyder Fawr and Glyder Fach. Castell y Gwynt, the “Castle of the Wind”, is a perfect viewpoint for soaking in the mountain views in all directions. Descend carefully via the Miner’s Track to Bwlch Tryfan, then along the shores of Llyn Bochlwyd to return to your starting point. A full day of engaging adventure!

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    Route Description for Glyderau Circular Walk via Castell y Gwynt

    From the visitor centre, start along the path that runs southeast across the Afon Idwal, then turn right at the junction to head southwest towards the northern end of Llyn Idwal. Follow a path along the north shore, and upon reaching the rocky “beach” at the northwest corner, turn right to join up with a path that approaches Y Garn on a relatively direct western approach. The path is quite steep and significantly eroded in places, so take care especially in poor conditions. Eventually, you’ll reach the level of Llyn Clyd, where the NE Ridge of Y Garn curves around to the left. Follow the main spine of this ridge to the summit, where a shelter awaits for a quick rest.

    The next section is a descent to Llyn y Cwn, which is a fairly straightforward southeast walk along another eroded path. Upon reaching the lake, the path skirts around its eastern end before climbing towards Glyder Fawr. The main path leads up a scree chute, which presents significant hazards especially in wet weather. A small stream to your left offers an alternative - either way, you’ll have to work for the summit! Once you reach the top, continue eastward through cairns and boulders to Castell y Gwynt and neighbouring Glyder Fach. Don’t forget a picture atop Cantilever Stone before you go!

    When you’re ready to descend, a number of options are possible. A scree path makes a very steep descent down Bristly Ridge—it’s best to avoid this and head instead for the Miner’s Track. Start just left of the Cantilever Stone, where you’ll have to clamber over some boulders before spotting the path that leads you on an eastward descent. You should be nearly at Llyn Caseg Fraith before turning left and following the Miner’s Track to Bwlch Tryfan. If you’re keen on extending the walk, a scramble up Tryfan’s South Ridge is possible here. Otherwise, continue northwest along the path which brings you near Llyn Bochlwyd. Cross the river and keep along that northwest bearing all the way back to the path you came in on, wrapping up back at the visitor centre.

    Getting to the Glyderau Circular Walk via Castell y Gwynt Trailhead

    This Glyderau circular walk starts from the Ogwen visitor centre, at the western end of Llyn Ogwen on the west side of the A5. There’s parking available here, and more along the A5 in the form of lay-bys. Fortunately, you can start this walk from the lay-bys as well, as there are multiple trails that lead to the north end of Llyn Idwal, where you meet up with the path outlined here.

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      Yes - On Leash

    • Family friendly


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