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Routes
Road cycling routes
United Kingdom
Wales
North Wales
Gwynedd

Penrhyndeudraeth

The best road cycling routes around Penrhyndeudraeth

4.8

(36)

2,694

riders

16

rides

Road cycling routes around Penrhyndeudraeth offer a diverse landscape for cyclists, situated at the edge of Snowdonia National Park. The terrain features a compelling mix of mountainous backdrops, including views of peaks like Cnicht, and tranquil coastal sections along the Dwyryd estuary. Cyclists can expect routes with significant elevation changes, alongside flatter paths that incorporate features like the Cob Causeway and Pont Briwet Bridge. This region provides varied road cycling terrain, from challenging ascents to scenic estuary rides.

Best road…

Last updated: May 11, 2026

332

riders

#1.

The Cob Causeway – Abersoch Village and Harbour loop from Penrhyndeudraeth

76.4km

03:13

500m

500m

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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Moderate

Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

Hard
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Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

Moderate

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

Moderate
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Tips from the Community

Glyn
April 8, 2026, Llyn Trawsfynydd Visitor Centre

Prysor Cafe now open most days, nice seating outside overlooking llyn.

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Charlie Cosh
September 21, 2025, Porthmadog Harbour

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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You'll probably be too gassed to look out for it, about 2/3rds the way up to the top of Cwm Penmachno from Lan Ffestiniog, so a good indicator of how far you've come.

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Surprisingly this is a two lane road and the amount of A roads around it means it was dead quiet even at peak school run time. But yeah it's a bit of a beast. Caught me out even after I'd ditched the luggage at camp. Would be a serious hill anywhere in England.

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Car park gets full up top so park sensibly park close to next car gives more space for others. Don’t park in front of gate as this is used by farmer Go Below and mountain/cave rescue. More parking available at bottom of hill.

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Small train station in the mountains - slate was once mined here - now a tourist attraction.

Translated by Google

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Use the cycle track next to the con, not the road as cars tend to speed.

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Gravel no longer, smooth tarmac all the way.

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Frequently Asked Questions

What kind of terrain can I expect on road cycling routes around Penrhyndeudraeth?

Road cycling around Penrhyndeudraeth offers a diverse mix of landscapes. You'll find challenging routes with significant elevation gains through mountainous backdrops, providing views of peaks like Cnicht Summit. There are also tranquil coastal sections along the Dwyryd estuary and flatter paths that incorporate features like the Cob Causeway and Pont Briwet Bridge, offering varied experiences for all skill levels.

Are there any easy road cycling routes suitable for beginners in the area?

Yes, Penrhyndeudraeth offers several moderate routes that are suitable for those looking for a less strenuous ride. For example, the Porthmadog Harbour – The Cob Causeway loop from Penrhyndeudraeth is a moderate 25.8 km route that offers scenic estuary views without extreme climbs. There are 3 easy routes and 10 moderate routes available in total.

What are some of the most scenic views or landmarks I can see while cycling?

Cyclists can enjoy breathtaking vistas of prominent peaks such as Cnicht, often called the 'Welsh Matterhorn,' and Moel-y-Gest Summit, which offers expansive views towards the Snowdonia range and the Llŷn Peninsula. Routes also feature refreshing coastal sections and picturesque views of the Dwyryd estuary, including the Cob Causeway and Porthmadog Harbour.

Are there any challenging road cycling routes for experienced riders?

Absolutely. For experienced cyclists seeking a challenge, routes like the Cwmorthin Falls – Stwlan Dam loop from Minffordd stand out. This difficult 45.8 km path features significant elevation gains, with over 1000 meters of ascent, offering demanding climbs and rewarding panoramic vistas through mountainous terrain. There are 3 difficult routes in the area.

What do other road cyclists think about the routes in Penrhyndeudraeth?

The road cycling routes around Penrhyndeudraeth are highly regarded by the komoot community, holding an average score of 3.0 stars from over 1 review. More than 400 road cyclists have used komoot to explore the varied terrain, often praising the combination of challenging climbs and stunning coastal and mountain scenery.

Are there any circular road cycling routes available from Penrhyndeudraeth?

Yes, many of the routes in the area are designed as loops, allowing you to start and finish in the same location. Examples include the The Cob Causeway – Abersoch Village and Harbour loop and the Pont Briwet Bridge and Estuary – Pengwern Country House loop, both offering diverse scenery on a circular path.

What is the best time of year to go road cycling in Penrhyndeudraeth?

The region's weather can be variable, but generally, late spring to early autumn (May to September) offers the most favorable conditions for road cycling, with milder temperatures and less rainfall. However, the dramatic landscapes of Snowdonia can be enjoyed year-round, with each season offering a unique experience, though winter rides may require more preparation for colder, wetter conditions.

Are there any family-friendly road cycling options in Penrhyndeudraeth?

While many routes feature significant elevation, some sections, particularly those utilizing old railway lines or flatter estuary paths like the Cob Causeway, can be more accessible for families. Look for routes with lower elevation gains and shorter distances, such as the Pont Briwet Bridge and Estuary – Penrhyndeudraeth loop, which is a moderate 38.3 km ride.

Where can I find parking for road cycling routes in Penrhyndeudraeth?

Penrhyndeudraeth and nearby towns like Porthmadog offer various parking options. Many routes start from or pass through areas with public car parks. It's advisable to check local council websites or parking apps for specific locations and any associated fees before your ride.

Can I access road cycling routes in Penrhyndeudraeth using public transport?

Penrhyndeudraeth is served by local bus routes and a railway station, making it possible to access the area via public transport. The railway line connects to larger hubs, and some bus services can accommodate bicycles, though it's always best to check with the specific operator beforehand for their bike carriage policies and schedules.

Are there any specific natural features or attractions to look out for on the routes?

Beyond the stunning mountain and coastal views, the region is dotted with natural features. You might encounter the serene Dwyryd estuary, the historic Cob Causeway, and various smaller lakes and rivers within the wider Snowdonia region. The area also boasts ancient woodlands and nature reserves like Gwaith Powdwr, offering diverse natural beauty.

How many road cycling routes are available around Penrhyndeudraeth?

There are 16 road cycling routes detailed around Penrhyndeudraeth, offering a wide range of experiences. These include 3 easy routes, 10 moderate routes, and 3 difficult routes, catering to various fitness levels and preferences.

Most popular routes around Penrhyndeudraeth

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