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MTB trails
United Kingdom
Wales
North Wales
Gwynedd

Caernarfon

The best MTB trails around Caernarfon

4.4

(86)

908

riders

30

rides

Mountain biking around Caernarfon offers diverse terrain, from the shores of Llyn Padarn to the foothills of Snowdonia. The region features a mix of rolling hills, forested valleys, and open landscapes, providing varied riding experiences. Trails often incorporate views of historical sites like Caernarfon Castle and the surrounding North Wales countryside. The area's geology includes a blend of slate, granite, and glacial features, shaping the natural flow of many routes.

Best mountain bike trails around Caernarfon

  • The most popular mountain bike trail is View of Llyn Padarn – Llanberis Lake Railway loop from Bethel, a 22.2 miles (35.7 km) trail that takes about 2 hours 50 minutes to complete. This route offers views of Llyn Padarn and follows the historic Llanberis Lake Railway.
  • Another top favourite among local mountain bikers is Telegraph Valley (Maesgwm) – Snowdon Ranger Hostel loop from Llanrug, a difficult 27.3 miles (44.0 km) path. This route navigates through Telegraph Valley, presenting challenging climbs and expansive mountain scenery.
  • Local mountain bikers also love the View of Snowdon – The Lonely Tree, Llyn Padarn loop from Llanrug, a 8.8 miles (14.2 km) trail leading through varied terrain with views of Snowdon and Llyn Padarn, often completed in about 1 hour 4 minutes.
  • Mountain biking around Caernarfon is defined by scenic lake loops, challenging valley climbs, and routes offering views of Snowdon. The network provides options for easy mountain bike trails Caernarfon suitable for beginners, as well as advanced mountain biking Caernarfon routes for experienced riders.
  • The routes in Caernarfon are highly rated by the komoot community with an average score of 4.5 stars from over 80 reviews. More than 900 mountain bikers have used komoot to explore Caernarfon's varied terrain.

Last updated: June 24, 2026

4.5

(2)

7

riders

#1.

View of Llyn Padarn – Llanberis Lake Railway loop from Bethel

35.8km

02:49

750m

750m

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

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Moderate

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary.

Hard
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Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

Moderate

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

Easy

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

Moderate
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Tips from the Community

Dominiek Van Dooren
May 7, 2026, Pont Aberglaslyn

The bridge was probably built in the 17th century and then radically rebuilt and widened in 1795-1796. As with many older bridges, folk tales claimed that the bridge was built by the devil or by the Romans (which an investigation by the National Trust described as "very doubtful"). During the reconstruction, a stone was found with the inscription "W M 1656" scratched on it, suggesting that the bridge is at least that old. Pont Aberglaslyn is located near the downstream end of the Aberglaslyn Pass. Although the location is rocky and the river flows through rapids upstream, it is not far above sea level. (Wikipedia)

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From the bridge you have a beautiful view of the rivers Colwyn and Glaslyn and their banks. The bridge stands over the river Colwyn, which flows into the river Glaslyn a little further on (at the footbridge).

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Stop, look out and listen are the recommendations (to be read on the sign) that you must follow when crossing the track here. It is an unguarded crossing on this railway for tourist trains.

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Fantastic views of slate quarry and Snowdon Llanberis path

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Beddgelert is a lovely village below Moel Hebog, and the bridge over the river is a key feature.

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Mike
November 1, 2025, Snowdon Ranger Hostel

I think the start and the end is probably the hardest but overall pretty easy path you can’t get lost

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

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Lovely area

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Frequently Asked Questions

How many mountain bike trails are available around Caernarfon?

There are over 30 mountain bike trails around Caernarfon listed on komoot, offering a variety of experiences for different skill levels.

Are there easy mountain bike trails suitable for beginners in Caernarfon?

Yes, Caernarfon offers several easy mountain bike trails perfect for beginners. For instance, the View of Snowdon – The Lonely Tree, Llyn Padarn loop from Llanrug is an easy 8.8-mile route with gentle terrain and scenic views. Another accessible option is the Caernarfon Castle loop from Caernarfon, which is 11.4 miles and relatively flat.

What kind of terrain can I expect on mountain bike trails near Caernarfon?

The terrain around Caernarfon is diverse, ranging from rolling hills and forested valleys to open landscapes. You'll find routes with views of historical sites like Caernarfon Castle and the surrounding North Wales countryside, often incorporating slate, granite, and glacial features.

Are there any challenging mountain bike routes for experienced riders?

Absolutely. For experienced riders seeking a challenge, the Telegraph Valley (Maesgwm) – Snowdon Ranger Hostel loop from Llanrug is a difficult 27.3-mile path with significant climbs and expansive mountain scenery. This route provides a demanding experience with over 1000 meters of elevation gain.

What do other mountain bikers say about the trails in Caernarfon?

The mountain bike trails in Caernarfon are highly rated by the komoot community, with an average score of 4.5 stars from over 80 reviews. Riders frequently praise the scenic lake loops, challenging valley climbs, and the stunning views of Snowdon.

Are there circular mountain bike routes available?

Yes, many of the mountain bike routes around Caernarfon are circular, allowing you to start and finish at the same point. A popular example is the View of Llyn Padarn – Llanberis Lake Railway loop from Bethel, a 22.2-mile circular trail.

What historical sites or landmarks can I see while mountain biking near Caernarfon?

The region is rich in history. You can ride past iconic landmarks such as Caernarfon Castle, a UNESCO World Heritage site. Other notable historical sites nearby include Dolbadarn Castle and the Segontium Roman Fort.

Are there any mountain bike trail centers or bike parks near Caernarfon?

While Caernarfon itself doesn't host a dedicated bike park, it serves as an excellent base for exploring natural mountain bike trails. For formal trail centers, you'll find options like Antur Stiniog and Coed y Brenin within a reasonable driving distance in North Wales, offering purpose-built trails for various skill levels.

What is the best time of year for mountain biking in Caernarfon?

Spring and autumn generally offer the most pleasant conditions for mountain biking in Caernarfon, with milder temperatures and beautiful scenery. Summer can also be great, but trails may be busier. Winter riding is possible, but be prepared for colder, wetter weather and potentially muddy conditions.

Are there any routes that offer views of Snowdon?

Many trails in the Caernarfon area provide stunning views of Snowdon, Wales' highest mountain. The View of Snowdon – The Lonely Tree, Llyn Padarn loop from Llanrug is specifically highlighted for its views of Snowdon and Llyn Padarn.

Can I find mountain bike routes that pass by lakes or water features?

Yes, the region is known for its beautiful lakes. Several routes offer scenic views of Llyn Padarn, such as the View of Llyn Padarn – Llanberis Lake Railway loop from Bethel and the Llanberis Lake Railway – Snowdon Inn Campsite loop from Waunfawr.

Is public transport an option for accessing mountain bike trails around Caernarfon?

Public transport options exist, primarily local bus services that connect Caernarfon with surrounding villages and trailheads. However, services can be infrequent, especially in more remote areas. It's advisable to check bus schedules in advance and confirm if bikes are permitted on board.

Where can I park my car when mountain biking in Caernarfon?

Parking is generally available in Caernarfon town center and at various trailheads in the surrounding areas. Many routes start from villages like Llanrug or Bethel, which often have designated parking areas, sometimes paid. Always check local signage for parking restrictions and fees.

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