Mynydd Perfedd
Mynydd Perfedd: The Overlooked Ridge Between Giants
Mynydd Perfedd is a quiet and often overlooked summit sitting between some of Snowdonia’s most dramatic peaks. At 813 metres, it’s not the highest in the Glyderau range, but it offers a surprisingly impressive viewpoint, especially for those linking it into longer mountain days. Its name means “Middle Mountain” in Welsh, fitting for its position between Carnedd y Filiast and Foel Goch.
A Quiet Spot with Epic Views
Despite its modest height, Mynydd Perfedd delivers stunning views across the Carneddau, Elidir Fawr, and the Ogwen Valley. Its broad grassy ridge is often missed by walkers heading for the higher tops, but those who include it are rewarded with a peaceful summit and striking perspectives on the surrounding ridgelines and reservoirs below. It’s a great spot to pause and soak in Snowdonia’s vast, rugged beauty without the crowds.
Snowdon’s varied routes mean there’s something for everyone, from leisurely walkers to seasoned hikers. Whether you’re taking the popular Llanberis Path or tackling the exhilarating Crib Goch ridge, each ascent is rewarding in its own way. Reaching the summit is not just about the view; it’s about the journey, the effort, and the stories you’ll tell after.
© Brad Carr
Walks & Hikes Around Mynydd Perfedd
While Mynydd Perfedd isn’t usually a standalone goal, it makes a great addition to circular ridge walks or Glyderau traverses. Here are some of the best ways to explore this underrated peak:
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Mynydd Perfedd via Marchlyn Mawr Dam
- 5 mi
- 3 hrs - 4 hrs
An easy-to-follow out-and-back from the dam road with views over the lake and a short climb to the summit.
Mynydd Perfedd & Foel Goch Ridge
- 7 mi
- 4 hrs - 5 hrs
A peaceful ridge route taking in both summits with big views and rolling terrain underfoot.
Carnedd y Filiast, Mynydd Perfedd & Elidir Fawr Loop
- 8.5 mi
- 5 hrs - 6 hrs
A rugged loop linking three distinct peaks above Marchlyn Mawr, offering high ridges and remote feeling paths.
Mynydd Perfedd from Deiniolen
- 6 mi
- 3.5 hrs - 4.5 hrs
A lesser-used approach through moorland and open hill with views toward Llyn Padarn and Llanberis Pass.
Glyderau East Traverse including Mynydd Perfedd
- 10 mi
- 6 hrs - 7 hrs
A full ridge traverse from Foel Goch to Elidir Fawr, ideal for seasoned hikers chasing wild views and solitude.
What to Know Before You Go
Mynydd Perfedd is best suited to hillwalkers comfortable with pathless terrain and basic navigation. The weather can change quickly, and much of the ridge is exposed to wind and cloud, so bring layers, a map, and compass. This area feels remote despite its proximity to Llanberis, so plan accordingly and let someone know your route.
Why We Love Mynydd Perfedd
There’s something special about the quieter corners of Snowdonia, and Mynydd Perfedd is a perfect example. It feels off the radar, even though it connects several classic routes. The views stretch in every direction, and the sense of peace here makes it an excellent summit to escape the crowds and reconnect with the landscape.
How to Get to Mynydd Perfedd
The easiest access is via the Marchlyn Mawr road (postcode: LL57 4BG) above Deiniolen, where a locked gate marks the start of the walk-in. There is limited roadside parking before the gate, arrive early.
For public transport, Deiniolen is served by buses from Caernarfon and Bangor. From there, it’s a longer walk up to the access road and into the hills.
If you’re travelling by public transport, the nearest train station is in Bangor, from where you can catch a bus to Llanberis. Sherpa buses also link the main trailheads, including Pen-y-Pass and Snowdon Ranger.
A Bit of Mynydd Perfedd History
Like many peaks in the Glyderau, Mynydd Perfedd has its roots in Snowdonia’s volcanic past. The surrounding area was once shaped by glacial movement, and today the mountain overlooks reservoirs like Marchlyn Mawr, which play a role in hydroelectric energy production. While there aren’t many legends tied to this summit, its name reflects its middle-ground position, both geographically and in height, among the Glyderau’s eastern ridges.
Keep exploring
Mynydd Perfedd is the perfect detour for those exploring the eastern Glyderau. Whether you’re linking summits or just enjoying a quieter ridge walk, there’s more to discover just beyond the next rise. Check out nearby peaks like Foel Goch and Elidir Fawr for more unforgettable days in the hills.