The best MTB trails around Porthmadog
3.6
(21)
131
riders
14
rides
Mountain biking around Porthmadog offers diverse terrain, situated between the coastal landscapes of the Llŷn Peninsula and the rugged peaks of Snowdonia National Park. The region features a mix of tranquil beaches, estuaries, and forested areas, providing a variety of riding experiences. This geography supports trails ranging from gentle coastal paths to challenging mountain ascents, catering to different skill levels. The area's natural features, including the Glaslyn Estuary and nearby Coedydd Maentwrog National Nature Reserve, contribute to scenic mountain biking…
Last updated: April 25, 2026
4
riders
62.9km
04:51
1,210m
1,210m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
4.0
(2)
5
riders
20.0km
01:21
290m
290m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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5.0
(1)
5
riders
22.3km
01:23
260m
260m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
4.0
(1)
3
riders
17.2km
00:58
110m
110m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
3
riders
15.6km
01:17
420m
420m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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Other adventures around Porthmadog
Tips from the Community
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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Porthmadog came about after William Madocks (a guess this is where the name of the town derives from) built a sea wall, the Cob to reclaim land from the sea for farming use. The diversion of the river caused it to scour out a new natural harbour deep enough for small ships and the first public wharves appeared in 1825. Quarry companies followed, with wharves along the shore mainly for the transport of slate and due to this the town grew in population and importance.
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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
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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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If you want to park here, you have to reserve a parking space in advance for 20 GBP. We didn't manage to do it, as everything was fully booked. You can then park in Llanberies and take the Sherpa Bus S1 or S2 to Pen y Pass. The bus runs every half hour. From Pen y Pass, you can then choose the Miner's Track or Pyg Track. Have fun!
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Right opposite the layby are the two main blocks - a good description and link to the topo is at https://www.climber.co.uk/outdoor/bouldering/around-the-bloc-the-cromlech-boulders-llanberis/ There are more higher up on the hill and you will find boulderars here at most times of the weather permits.
3
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Currently parking is pre-booking only! All others are directed to the P+R in the village and need to get up by bus or walk.
3
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Frequently Asked Questions
How many mountain bike trails are available around Porthmadog?
Komoot lists over a dozen mountain bike trails around Porthmadog, offering a diverse range of experiences. These include 5 easy routes, 7 moderate routes, and 3 difficult routes, catering to various skill levels.
Are there mountain bike trails suitable for beginners or families in Porthmadog?
Yes, Porthmadog offers several easy mountain bike trails perfect for beginners and families. Routes like the Penmorfa Forest Path – View of Porthmadog loop (12.4 miles) or the Porthmadog Harbour – Penrhyndeudraeth loop (10.7 miles) are suitable for any fitness level and provide scenic views without demanding technical skills. Beddgelert Forest, a short distance away, also offers smaller loops ideal for families with off-road capable bikes.
What are some challenging mountain bike routes for experienced riders near Porthmadog?
For experienced riders seeking a challenge, the Pen-y-Pass – Telegraph Valley (Maesgwm) loop from Penrhyndeudraeth is a demanding 39.1-mile route requiring very good fitness and advanced riding skills. The Cnicht – Rhyd Road Climb loop from Llanfrothen also offers varied terrain with significant climbs.
What kind of landscapes can I expect to see while mountain biking around Porthmadog?
Mountain biking around Porthmadog offers a rich variety of landscapes. You'll encounter coastal paths along the Llŷn Peninsula, tranquil estuaries like the Glaslyn Estuary, and rugged peaks and forested valleys within and around Snowdonia National Park. The region's diverse terrain includes views of expansive beaches, historic towns, and lush nature reserves.
Are there any circular mountain bike routes in the Porthmadog area?
Yes, many of the mountain bike routes around Porthmadog are circular, allowing you to start and finish in the same location. Examples include the Penmorfa Forest Path – View of Porthmadog loop and the Porthmadog Harbour – Penrhyndeudraeth loop, both starting from Porthmadog.
What are some scenic attractions or landmarks to explore near the mountain bike trails?
The Porthmadog area is rich in natural beauty and historical sites. You can explore stunning lakes like Llyn Dinas and Llyn Trawsfynydd, or visit historic castles such as Harlech Castle and Criccieth Castle. The Glaslyn Estuary offers beautiful waterside views, and the Coedydd Maentwrog National Nature Reserve features unique temperate rainforests.
What do other mountain bikers enjoy most about mountain biking in Porthmadog?
The mountain bike trails around Porthmadog are highly rated by the komoot community, with an average score of 3.8 stars from over 20 reviews. Riders often praise the diverse terrain, ranging from coastal paths to mountain ascents, and the stunning views of Snowdonia National Park and the Llŷn Peninsula.
Is bike hire available in Porthmadog?
Yes, some holiday parks in the Porthmadog area, such as Greenacres Holiday Park, offer bike hire services, making it convenient to explore the local coast and surrounding trails even if you don't bring your own bike.
Are there options for mountain biking further afield from Porthmadog for a day trip?
Porthmadog serves as an excellent base for exploring premier mountain biking locations in North Wales. Coed y Brenin, one of the UK's first dedicated mountain bike trail centers, and Antur Stiniog, known for its downhill trails, are both within reasonable reach for a day trip, offering even more extensive riding opportunities.
What is the best time of year for mountain biking in Porthmadog?
Porthmadog offers mountain biking opportunities year-round. However, the spring and autumn months typically provide the most pleasant conditions with milder weather and vibrant scenery. Summer is also popular, but trails can be busier. Winter riding is possible, but be prepared for potentially wet and colder conditions, especially on higher elevation routes.
Are there any mountain bike trails near Porthmadog that offer views of Yr Wyddfa (Snowdon)?
Yes, many trails in the wider Snowdonia National Park area, accessible from Porthmadog, offer spectacular views of Yr Wyddfa (Snowdon). Beddgelert Forest, a short drive away, provides smaller loops with stunning mountain vistas, including Wales' highest peak.
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