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MTB trails
United Kingdom
Wales
North Wales
Gwynedd

Llyn Idwal

The best MTB trails around Llyn Idwal

4.4

(93)

961

riders

19

rides

Mountain biking around Llyn Idwal offers routes through a landscape characterized by rugged mountain terrain, glacial valleys, and clear lake views within Snowdonia National Park. The area features a mix of challenging ascents and descents, alongside more gentle paths suitable for various skill levels. Riders can expect to navigate rocky trails, forest sections, and open mountain passes, providing diverse riding experiences. The region's geology, shaped by ancient glaciers, contributes to its dramatic and varied topography.

Best mountain bike trails around Llyn Idwal

  • The most popular mountain bike trail is Llyn Mymbyr – Bridge Over Llyn Mymbyr loop from Tryfan, an 8.9 miles (14.3 km) trail that takes 1 hour 4 minutes to complete. This easy route offers scenic views of Llyn Mymbyr with the backdrop of Tryfan.
  • Another top favourite among local mountain bikers is Llyn Ogwen – Nant Ffrancon Cycle Route loop from Bethesda, a moderate 22.3 miles (35.9 km) path. This route explores the Nant Ffrancon valley and passes by Llyn Ogwen, showcasing diverse mountain scenery.
  • Local mountain bikers also love the View of Llyn Padarn – Llanberis Lake Railway loop from Llanberis, a 5.4 miles (8.8 km) trail leading through lakeside paths and near the historic Llanberis Lake Railway, often completed in about 30 minutes.
  • Mountain biking around Llyn Idwal is defined by glacial valleys, mountain passes, and lake views. The network offers options for different ability levels, from easy lakeside loops to more challenging mountain ascents.
  • The routes in Llyn Idwal are highly rated by the komoot community with an average score of 4.4 stars from over 80 reviews. More than 900 mountain bikers have used komoot to explore Llyn Idwal's varied terrain.

Last updated: June 24, 2026

5.0

(1)

11

riders

#1.

Llyn Mymbyr – Bridge Over Llyn Mymbyr loop from Tryfan

14.3km

01:05

160m

160m

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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Easy

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.

Hard

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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Popular around Llyn Idwal

Hiking around Llyn Idwal

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Road Cycling Routes around Llyn Idwal

Mountain Hikes around Llyn Idwal

Tips from the Community

Anthony Turner
April 4, 2026, View of Dinorwic Quarry and Llyn Peris

Fantastic views of slate quarry and Snowdon Llanberis path

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Clive G
March 25, 2026, Llyn Ogwen

Beautiful lake, but avoid the area at Easter!

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This place is fun to explore and an interesting peek into Welsh rich mining heritage

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Dinorwic Quarry, located between the villages of Llanberis and Dinorwig in Wales, offers a dramatic and historically rich landscape, with stunning views over . https://www.mybalancenow.it.com

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Amazing views, worthy of passing by

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Excellent sight looking across Llyn Peris which is 503mtrs above sea level. Dinorwig hydroelectric power station is straight across the lake, this generates 1728MW of power. There are 16 kilometres of deep tunnels in Elidir Mountain. This was opened in 1984

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This elevated point had excellent views looking down on Llyn Peris lake and around the old slate quarry. The wild goats were basking in the sun less than 100 metres away. You can get quite close to the goats, but too close and they move away slightly.

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The visitor centre is located on the A5, approximately 5 miles south of Bethesda and approximately 4 miles west of Capel Curig, on the western side of Llyn Ogwen. 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

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Frequently Asked Questions

How many mountain bike trails are available around Llyn Idwal?

There are over 20 mountain bike trails around Llyn Idwal, offering a diverse range of experiences. These include 5 easy routes, 9 moderate routes, and 6 difficult routes, catering to various skill levels.

Are there family-friendly mountain bike trails near Llyn Idwal?

Yes, Llyn Idwal offers several family-friendly mountain bike trails. An excellent option is the View of Llyn Padarn – Llanberis Lake Railway loop from Llanberis, which is an easy 8.8 km route taking about 30 minutes to complete. It features lakeside paths and passes near the historic Llanberis Lake Railway, making it suitable for families.

What are some good mountain bike routes for beginners in the Llyn Idwal area?

Beginners can enjoy easier routes that offer scenic views without extreme technical challenges. The Llyn Mymbyr – Bridge Over Llyn Mymbyr loop from Tryfan is an easy 14.3 km trail that provides beautiful views of Llyn Mymbyr and the Tryfan mountain backdrop.

Where can I find challenging mountain bike trails around Llyn Idwal?

For advanced mountain bikers seeking a challenge, the region offers several difficult routes. Consider the Yr Wyddfa (Snowdon) circular, via the Llanberis and Ranger paths, an 18.5 km route with significant elevation gain. Another demanding option is the Llanberis Path – Snowdon Summit (Yr Wyddfa) loop from Llanberis, a 30.7 km trail with over 1000 meters of ascent.

Are there any circular mountain bike routes in the Llyn Idwal area?

Many of the mountain bike trails around Llyn Idwal are circular, allowing you to start and end at the same point. Examples include the Llyn Mymbyr – Bridge Over Llyn Mymbyr loop from Tryfan and the Llyn Ogwen – Nant Ffrancon Cycle Route loop from Bethesda, both of which are popular circular options.

What is the best time of year for mountain biking near Llyn Idwal?

The best time for mountain biking around Llyn Idwal is generally from late spring to early autumn (May to October). During these months, the weather is typically milder, trails are drier, and daylight hours are longer. However, conditions can change rapidly in Snowdonia, so always check the local weather forecast before heading out.

What are the typical trail lengths and durations for mountain biking in Llyn Idwal?

Trail lengths vary significantly, from shorter loops of around 8-9 km, like the View of Llyn Padarn – Llanberis Lake Railway loop (approx. 30 minutes), to longer, more challenging routes exceeding 30 km, such as the Llyn Ogwen – Nant Ffrancon Cycle Route loop (around 2.5 hours) or the Llanberis Path – Snowdon Summit loop (over 3 hours).

What do other mountain bikers say about the trails around Llyn Idwal?

The mountain bike trails around Llyn Idwal are highly regarded by the komoot community, holding an average rating of 4.4 stars from over 80 reviews. Riders frequently praise the diverse terrain, from challenging mountain passes to serene lakeside paths, and the stunning glacial valley scenery.

Are there any cafes or facilities near the Llyn Idwal mountain bike trails?

While Llyn Idwal itself is a more remote mountain environment, there are facilities in nearby villages and towns. Bethesda, Llanberis, and Capel Curig, which serve as starting points for many routes, offer cafes, pubs, and shops where you can refuel and find amenities.

Can I find wild swimming spots near the mountain bike routes in Llyn Idwal?

Yes, the Llyn Idwal area, being part of Snowdonia National Park, is known for its beautiful lakes and rivers, offering opportunities for wild swimming. Llyn Idwal itself is a popular spot, and other lakes like Llyn Ogwen and Llyn Padarn, which are often part of or close to mountain bike routes, also provide chances for a refreshing dip.

What are the parking options for mountain biking around Llyn Idwal?

Parking is available at various points around Llyn Idwal and the wider Snowdonia area, often near popular trailheads or visitor centers. Specific parking areas can be found near Ogwen Cottage (for Llyn Idwal and Ogwen Valley access), in Llanberis (for routes around Llyn Padarn and Snowdon), and in Bethesda. Always check for parking fees and availability, especially during peak season.

What kind of terrain can I expect on mountain bike trails in Llyn Idwal?

The terrain around Llyn Idwal is varied and shaped by its glacial history. You can expect a mix of rocky singletrack, gravel paths, forest sections, and open mountain passes. Some routes feature challenging ascents and descents, while others offer smoother lakeside riding. The diverse topography provides a dynamic riding experience.

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