Glyder Fawr & Glyder Fach loop from Ogwen Cottage
Glyder Fawr & Glyder Fach loop from Ogwen Cottage
27
runners
01:52
10.1km
740m
Running
Embark on the Glyder Fawr & Glyder Fach loop from Ogwen Cottage, a difficult jogging route that plunges you into a landscape often likened to a stony wasteland or moon-scape. This challenging 6.3-mile (10.1 km) journey demands a significant effort, with 2414 feet (736 metres) of elevation gain over an estimated 1 hour and 52 minutes. You will navigate steep, rocky ascents and descents, loose scree, and bouldery paths, passing the picturesque Cwm Idwal. From the summits, expect expansive 360-degree panoramas, including a glimpse of the iconic Cantilever Stone on Glyder Fach.
This difficult route is not recommended for beginners; ensure you have proper hiking footwear to navigate the loose and uneven ground safely. Be prepared for rapidly changing weather conditions, as fog can make navigation tricky and rain can make surfaces very slippery. Starting from Ogwen Cottage, plan your visit to allow ample time for the challenging terrain and potential weather shifts. Always check forecasts before you head out.
This loop offers a truly unique experience within Eryri (Snowdonia) National Park, known for its rugged and dramatic scenery. The otherworldly feel of the Glyderau mountains, with their distinctive rock formations and vast views, sets this trail apart. It's a prime example of the challenging and rewarding high-mountain jogging available in this region, offering a memorable adventure for those seeking a demanding physical test.
Last updated: April 23, 2026
Tips
Your route passes through a protected area
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Waypoints
Start point
Parking
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20 m
Highlight • Parking
Translated by Google •
Tip by
990 m
Highlight • Lake
Tip by
4.09 km
Highlight • Summit
Tip by
10.1 km
End point
Parking
Way Types & Surfaces
Way Types
4.62 km
2.53 km
2.26 km
674 m
< 100 m
Surfaces
3.82 km
3.74 km
1.56 km
807 m
< 100 m
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Elevation
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Weather
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Tuesday 5 May
11°C
1°C
0 %
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Max wind speed: 9.0 km/h
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This route was planned by komoot.
While the tour data suggests a jogging duration of around 1 hour 52 minutes, this is a challenging route. For most experienced hikers, it's a strenuous mountain day that can take anywhere from 4 to 7 hours, depending on fitness levels, weather conditions, and how much time you spend enjoying the views and unique rock formations.
The trail conveniently starts from Ogwen Cottage. Parking is available at the Ogwen Visitor Centre and Snack Bar. Be aware that this is a popular spot, so parking can fill up quickly, especially on weekends and during peak season. Arriving early is highly recommended.
No, this loop is considered difficult and is not recommended for beginners. It requires very good fitness, sure-footedness, sturdy shoes, and potentially alpine experience. The terrain includes steep, rocky ascents and descents, loose scree, and bouldery paths, with sections that may involve mild scrambling.
The terrain is highly varied and often difficult. Expect steep, rocky ascents and descents, loose scree, and bouldery paths. Sections like the ascent via Devil's Kitchen involve steep, stepped paths and may require mild scrambling. The path from Llyn y Cwn up to Glyder Fawr is particularly known for its loose scree, and the section between Glyder Fawr and Glyder Fach is a 'sea of rocks' requiring careful navigation over boulders. Wet conditions can make surfaces very slippery.
The loop offers spectacular and 'otherworldly' scenery. Highlights include the picturesque Cwm Idwal and Llyn Idwal, views of the Devil's Kitchen, and stunning 360-degree panoramas from the Glyder Fawr summit. You'll also encounter unique rock formations like Castell y Gwynt ('Castle of the Wind') and the iconic Cantilever Stone on Glyder Fach, a popular photo spot.
The best time to visit is typically during the late spring, summer, and early autumn months (May to October) when the weather is generally more stable and daylight hours are longer. However, even in summer, mountain weather can change rapidly. Winter conditions can make the route significantly more challenging, requiring specialist equipment and experience.
Yes, dogs are generally allowed on this trail. However, due to the challenging terrain, including steep rocky sections and potential scrambling, it may not be suitable for all dogs. Always keep dogs on a lead, especially near livestock and to protect wildlife, and ensure they are capable of handling the strenuous conditions.
No, there are no specific permits or entrance fees required to hike this route or to enter Eryri (Snowdonia) National Park. However, parking at popular trailheads like Ogwen Cottage usually incurs a fee. Please respect the 'leave no trace' principles and follow the Countryside Code when visiting the park.
Given the difficult nature of the trail, essential gear includes sturdy hiking boots with good ankle support, waterproof and windproof layers, a map and compass (and the skills to use them), sufficient water and snacks, a first-aid kit, and a headlamp (even for day hikes). Trekking poles can also be very helpful on the steep and rocky sections.
Yes, this route intersects with several other paths. A significant portion of the loop follows sections of the Cambrian Way, and it also crosses parts of the Welsh Three Thousands and the Cwm Idwal Walk. You may also encounter short sections of the Miners' Track and Llwybr y Carw.
This loop offers a truly unique experience with its 'otherworldly' landscape, distinct from more frequented peaks like Snowdon. It combines rugged terrain with some of the most spectacular mountain views in the UK, featuring iconic geological formations such as the Cantilever Stone and Castell y Gwynt. It's an excellent choice for those seeking a strenuous mountain day with breathtaking geological features and expansive vistas.