Pen yr Ole Wen and Llyn Ogwen Loop
Pen yr Ole Wen and Llyn Ogwen Loop
9
runners
Pen yr Ole Wen and Llyn Ogwen Loop
02:02
7.16km
660m
Running
Prepare for a challenging jogging adventure on the Pen yr Ole Wen and Llyn Ogwen Loop, a difficult route that takes you through some of Snowdonia's most dramatic landscapes. This 4.5-mile (7.2 km) journey demands a significant effort, with 2166 feet (660 metres) of elevation gain, typically completed in about 2 hours and 1 minute. You will experience varied terrain, from steep, rocky ascents to more gentle lakeside paths around the beautiful Llyn Ogwen, all while enjoying panoramic views from the summit of Pen yr Ole Wen.
When planning your visit, start your jogging loop from the convenient Ogwen Visitor Centre and Snack Bar, where parking is readily available. Be aware that this route is best suited for experienced trail runners due to its technical sections and considerable elevation changes. You should also prepare for potentially boggy paths, especially after rain or during the colder months, and bring your navigation tools as some sections of the trail are not always clearly marked.
This loop offers a unique perspective of the region, with the iconic peak of Tryfan often visible as you make your way around. From the top of Pen yr Ole Wen, you can take in sweeping 360-degree vistas that include distant Anglesey, the majestic Snowdon, and the rugged Glyderau peaks. It is a rewarding experience that showcases the raw beauty and scale of the Welsh mountains.
Last updated: April 23, 2026
Tips
Includes a segment that may be dangerous
A part of this route comprises technical, difficult, or hazardous terrain. Specialist equipment and prior experience may be required.
After 281 m for 1.41 km
Waypoints
Start point
Parking
Get Directions
2.10 km
Pen Yr Ole Wen
Highlight • Summit
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With a height of 978 meters, Pen Yr Ole Wen is the ninth summit of the Welsh 3000s and the first you climb on the Carneddau ridge. Two paths lead up to the summit, the first, much steeper path, starts directly at the hostel. The second and more comfortable route begins at the Glan Dena refuge on the eastern shore of Lake Llyn Ogwen.
Translated by Google •
Tip by
5.28 km
Llyn Ogwen
Highlight • Viewpoint
The lake is a popular site, due to the Ogwen Visitor centre being on the banks, as well as this area being the start of being hiking and climbing routes.
The lake is unusually shallow for a lake of this size, with a maximum depth of 3 metres.
Tip by
6.95 km
Ogwen Visitor Centre and Snack Bar
Highlight • Parking
There are a number of facilities including toilets, disabled toilets, an information room, public wifi and a small kiosk selling hot and cold snacks.
From the visitor centre you can start a range of walks and climbs in the area. The most popular is the walk to Wales' first ever national nature reserve, the beautiful Cwm Idwal, a glacial lake with a mountainous backdrop.
(Cwm Idwal National Nature Reserve)
Translated by Google •
Tip by
7.16 km
End point
Parking
Way Types & Surfaces
Way Types
2.99 km
2.14 km
1.38 km
339 m
182 m
111 m
Surfaces
3.00 km
2.01 km
1.62 km
339 m
182 m
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Elevation
Highest point (950 m)
Lowest point (300 m)
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Weather
Powered by Foreca
Thursday 7 May
13°C
3°C
32 %
Additional weather tips
Max wind speed: 20.0 km/h
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This route was planned by komoot.
Frequently Asked Questions
Is the Pen yr Ole Wen and Llyn Ogwen Loop suitable for continuous jogging?
While the route is classified for jogging, continuous running is generally not feasible due to its challenging nature. The trail features significant elevation gain, steep ascents, loose scree, rocky sections, and short Grade 1 scrambles that require using your hands. It's best approached as a challenging hike with opportunities for jogging on flatter or less technical sections, particularly on some grassy descents.
Where can I park to access this trail?
The most common starting point is near the Ogwen Visitor Centre and Snack Bar, which offers parking facilities. Arriving early, especially on weekends or during peak season, is highly recommended as parking can fill up quickly.
What kind of terrain should I expect on the route?
Expect highly varied terrain. You'll encounter stone steps, sections with loose scree and shingle, rocky paths, and potentially boggy ground, especially near the lake or after rain. There are also short scrambling sections that require careful footing and the use of hands.
What are the main highlights and viewpoints along the way?
The trail offers spectacular scenery. You'll pass the beautiful Llyn Ogwen, and from the summit of Pen Yr Ole Wen, you'll be rewarded with 360-degree panoramic views of Anglesey, Snowdon, the Glyderau peaks (including Tryfan), Y Garn, and Elidir Fawr. The iconic peak of Tryfan is a constant and impressive presence throughout the route.
Is this trail dog-friendly?
Yes, dogs are generally welcome on the trail. However, due to the challenging terrain, including scrambles, loose scree, and potentially boggy sections, ensure your dog is fit and accustomed to mountain environments. Always keep dogs on a lead, especially near livestock or during nesting seasons, and be prepared to lift them over stiles or difficult sections if necessary.
What is the best time of year to visit?
The best time to tackle this route is typically from late spring to early autumn (May to October) when weather conditions are generally more stable and daylight hours are longer. Winter conditions can be severe, with snow, ice, and high winds, making the trail significantly more challenging and requiring specialist equipment and experience. Be aware that the trail can be boggy after heavy rain at any time of year.
Does the trail intersect with other well-known paths?
Yes, the route also passes through sections of the Cambrian Way, the Snowdonia Slate Trail, and the Welsh Three Thousands. Part of the trail also overlaps with the Llyn Ogwen Circular Walk.
Do I need a permit or is there an entrance fee for Snowdonia National Park?
No, you do not need a permit to hike or jog this trail, and there are no entrance fees for Snowdonia National Park itself. However, parking facilities, such as those at the Ogwen Visitor Centre, may charge a fee.
What should I pack for this challenging route?
Given the 'difficult' rating and varied terrain, you should pack sturdy hiking boots with good ankle support, waterproof and windproof layers, a map and compass (and know how to use them), sufficient water and snacks, a first-aid kit, and a fully charged phone. Trekking poles can be beneficial for stability on descents and rocky sections.
Are there any amenities or places to get food and drink nearby?
Yes, the Ogwen Visitor Centre and Snack Bar, located at the common trailhead, offers refreshments and facilities. This is a convenient spot for a snack or drink before or after your adventure.
What makes Pen yr Ole Wen a notable peak in Snowdonia?
At 978 meters (3,209 feet), Pen Yr Ole Wen is the 7th highest peak in Snowdonia and the 3rd highest in the Carneddau range. It's often considered one of Snowdonia's most underrated peaks, offering incredible panoramic views and a comparatively quieter experience than more heavily trafficked mountains like Snowdon. It also serves as an excellent gateway to explore the wider Carneddau range.