4.8
(7)
31
riders
2
rides
Mountain biking around Llanaelhaearn offers diverse and challenging natural landscapes within the Llŷn Peninsula, an Area of Outstanding Natural Beauty. The region features significant elevation changes and varied terrain, including the prominent Yr Eifl mountain. Riders can expect segments that are unpaved and technically demanding, often traversing areas shaped by historical quarrying. This environment provides a range of mountain biking experiences, from moderate to challenging.
Last updated: July 7, 2026
4.4
(5)
15
riders
22.2km
01:54
490m
490m
This moderate 13.8-mile mountain bike loop on the Lleyn Peninsula offers spectacular views and challenging terrain around Yr Eifl.
5.0
(1)
10
riders
42.7km
03:55
1,100m
1,100m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

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5.0
(1)
3
riders
22.3km
01:23
260m
260m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
3
riders
48.0km
03:01
580m
580m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
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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.
9
0
I think the start and the end is probably the hardest but overall pretty easy path you can’t get lost
0
0
Tis is the crossing of the Ffestiniog Welsh Highland Railway at Rhyd Ddu. once through the crossing the surface becomes compact gravel and climbing. It is rideable but takes effort
1
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Maesgwm is also known as Telegraph Valley. The trail is gravel and well-made, brilliant to ride and much quieter than the main Llanberis path. It makes a great loop from Llanberis, using a section of the Ranger. Rideable in both directions.
1
1
Porthmadog is simply a busy hub, a gateway to the Llyn Peninsula and Snowdonia National Park. It is a lovely harbour town with a gorgeous mountain backdrop. It also has a good range of shops and attractions including nearby Portmeirion, a narrow-gauge railway, a normal railway and guess what...an excellent hands-on railway museum!
0
0
A scenic single track road with views towards Tre'r Ceiri, the historic and perhaps best-preserved Iron Age hill forts in the UK.
0
0
The three stones above Nant Gwytheryn (the Welsh language and heritage centre), perhaps representing the three peaks of Yr Eifl. From here a short detour to the centre can be made for a cake in the cafe.
0
0
A pleasantly winding descent on double track through the old quarry workings with super views along the Lleyn Peninsula.
0
0
The Llanaelhaearn area offers a selection of mountain bike routes, with komoot featuring 5 distinct trails. These routes primarily present moderate challenges, though there is one easy option available for those seeking a less strenuous ride.
You can expect diverse and challenging natural landscapes, often featuring significant elevation changes and varied terrain. Many segments are unpaved and technically demanding, especially around the prominent Yr Eifl mountain and areas shaped by historical quarrying. The region's designation as an Area of Outstanding Natural Beauty ensures preserved natural features and stunning views.
While most routes around Llanaelhaearn are moderate, there is an easy option available. The View of Porthmadog – Porthmadog Harbour Town loop from Criccieth is a 22.3 km trail that takes approximately 1 hour 22 minutes, offering a less challenging experience.
Many routes offer spectacular views of both mountains and the sea. The Lleyn Peninsula loop of Yr Eifl is known for its panoramic vistas, extending on clear days as far as the Isle of Man. Routes exploring the Llŷn Peninsula AONB also provide breathtaking coastal and mountain scenery.
Yes, all the featured mountain bike routes in the area are designed as loops. For example, you can explore the challenging Lleyn Peninsula loop of Yr Eifl or the coastal Pwllheli town centre and beach – Nant Gwrtheyrn Quarry Ruins loop from Pwllheli.
The region is rich in history. You can encounter historical quarry ruins along routes like the Pwllheli town centre and beach – Nant Gwrtheyrn Quarry Ruins loop from Pwllheli or the Nant Gwrtheyrn – Nant Gwrtheyrn Quarry Ruins loop from Llithfaen. Additionally, nearby attractions include the well-preserved Tre'r Ceiri Hillfort, an Iron Age site offering stunning views.
The mountain biking experience around Llanaelhaearn is highly rated by the komoot community, with an average score of 4.6 stars from over 6 reviews. Riders often praise the spectacular views, challenging terrain, and the unique blend of mountain and coastal scenery within the Llŷn Peninsula AONB.
Trail distances vary, ranging from approximately 12.8 km (8 miles) to 48 km (30 miles). Durations can range from about 1 hour 15 minutes for shorter routes to over 3 hours for longer, more challenging trails, depending on your pace and the specific route's elevation changes.
Yes, the Llŷn Peninsula's unique coastline means many routes offer sea views. The Pwllheli town centre and beach – Nant Gwrtheyrn Quarry Ruins loop from Pwllheli explores coastal areas, and the View of Black Rock Beach loop from Criccieth also provides excellent coastal vistas.
The area is characterized by dramatic and lush scenery. You'll frequently encounter the rugged Yr Eifl mountain, which is central to several routes and offers significant elevation. The trails also traverse varied topography including hills, valleys, and the distinctive coastline of the Llŷn Peninsula AONB.
Many routes offer incredible viewpoints. The Yr Eifl Summit is a key feature, providing panoramic views. Other notable viewpoints in the vicinity include Craig Cwm Silyn summit and Nefyn Beach.


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