The best cycling routes in Gwynedd

The Mawddach Trail & Cregennan Lakes loop from Barmouth offers a diverse touring cycling experience, combining flat estuary paths with challenging mountain climbs. You will cycle 20.7 miles (33.3 km) with a total elevation gain of 1418 feet (432 metres), making it a moderate ride that typically takes around 2 hours and 19 minutes. A highlight is crossing the historic Barmouth Bridge, a Grade II-listed wooden viaduct, which provides exceptional coastal views before you head towards the tranquil Cregennan Lakes nestled under Cadair Idris.

Planning your ride, you should know that the Mawddach Trail section is mostly flat and traffic-free, suitable for many abilities. However, the climb to Cregennan Lakes involves a sustained ascent on quiet mountain lanes, and the descent afterwards is very steep with hairpin bends, requiring careful riding. The route is often suggested to be cycled clockwise to make the climb more manageable. Surfaces vary from smooth gravel on the estuary to paved roads and potentially unpaved segments in the mountain sections.

This route is celebrated for its spectacular and varied scenery, transitioning from the rich wetland and woodland habitats of the Mawddach Estuary to the remote beauty of the Cregennan Lakes. The Mawddach Trail itself follows a disused railway line, offering a glimpse into the region's industrial past. The estuary is also a site of special scientific interest, home to two RSPB reserves, making it a great spot for wildlife viewing.

This difficult touring cycling loop covers 29.2 miles (46.9 km) with a significant 2056 feet (627 metres) of elevation gain, typically taking around 3 hours and 4 minutes. You will cycle through wooded vales and rocky slopes, enjoying extensive views across Snowdonia National Park. A highlight is the dramatic Llanberis Pass, a spectacular road climb, and the amazingly scenic ascent alongside Llyn Gwynant, where you can spot Snowdon to your left.

Be prepared for a challenging ride; while mostly paved, some unpaved sections might require you to push your bike. The route is ideal for touring cyclists with very good fitness. You can start this popular loop from Beddgelert, or consider the Pen-y-Pass car park along Llanberis Pass as an alternative starting point, which is also a hub for other outdoor activities. This route is best enjoyed when you are ready for significant ascents and descents.

This loop is one of the most popular touring cycling routes originating from Beddgelert, a village nestled at the confluence of the Afon Colwyn and Afon Glaslyn rivers, offering views of Yr Wyddfa (Snowdon) to the north. The route connects several picturesque lakes and traverses the diverse landscapes of Snowdonia National Park, making it a memorable experience for its combination of challenging climbs and panoramic vistas.

Embark on an easy touring cycling adventure around Lake Bala, Wales' largest natural lake. This 11.5-mile (18.5 km) route offers mostly flat, well-paved surfaces, making for a relaxed ride. You will gain a gentle 400 feet (122 metres) in elevation, and most riders complete it in about 1 hour and 9 minutes. As you pedal, enjoy continuous scenic views of Bala Lake, also known as Llyn Tegid, with the dramatic Snowdonia landscapes forming a stunning backdrop. Keep an eye out for the Tegid Trail, which provides excellent lakeside vistas, and you might even spot local wildlife like Red Kites.

Starting your ride is straightforward, as Bala provides ample public parking options. If you are visiting without your own bike, you will find bike hire readily available in the area. This route is generally accessible throughout the year, so you do not need to worry about specific warnings for snow, closures, or permits. It is a great option for a leisurely morning or afternoon outing.

This touring bicycle route is notable for circling Llyn Tegid, which holds the distinction of being Wales' largest natural lake. The trail offers a unique opportunity to experience the serene beauty of this significant body of water and its surrounding hills. You will be immersed in the natural environment of Snowdonia National Park, making it a perfect way to connect with the region's landscape.

This difficult touring bicycle loop from Llanberis takes you through the dramatic landscapes of Eryri / Snowdonia National Park. You will cycle 29.2 miles (47.0 km) with a significant elevation gain of 2300 feet (701 metres), which typically takes around 3 hours and 27 minutes. The route features the celebrated Llanberis Pass, offering spectacular views of Yr Wyddfa (Snowdon) and the Glyderau and Snowdon Massif mountain ranges, including the ribbon lake Llyn Ogwen.

Planning your ride, be aware that this route is classified as difficult and requires a very good level of fitness. While mostly on paved surfaces, some unpaved sections may require you to dismount and push your bike. The ascent to Pen-y-Pass, especially from Nant Peris, is a notable challenge with gradients reaching up to 9.6%. Pen-y-Pass itself provides amenities like toilets and a café, making it a good spot for a break.

The Pen-y-Pass & Ogwen Valley loop offers a comprehensive tour of North Snowdonia's rugged beauty. The region is a UNESCO World Heritage site, rich in history from its mining past, and provides views of the Snowdon Massif, Y Carneddau, and Y Glyderau mountain groups. The Llanberis Pass is not only visually striking but also historically significant, known for rock climbing and bouldering.

Embark on a challenging touring bicycle loop from Beddgelert, taking you through the diverse landscapes of Eryri / Snowdonia National Park. This 44.2-mile (71.1 km) route offers extensive views across the park, including clear sights of Yr Wyddfa (Snowdon) and the serene Llyn Dinas. You will cycle through picturesque wooded vales, dramatic rocky slopes, and mountain passes, experiencing a significant 3868 feet (1179 metres) of elevation gain. The journey, typically completed in about 5 hours and 2 minutes, promises a rewarding experience amidst stunning Welsh scenery.

This difficult touring bicycle route is considered a hard bike ride, demanding a very good fitness level. Be prepared for substantial climbs, including the notably steep "Cwm Penmachno Climb." While primarily paved, some sections may be unpaved, featuring a mix of State Road, Path, and Cycleway. You can opt for the Roman Road Gravel Track to bypass a busy main road; it is generally rideable on loaded touring bikes with 35mm to 40mm tires, though it includes steep ascents.

What makes this loop particularly notable is its combination of natural beauty and the challenge it presents, connecting the distinctive towns of Blaenau Ffestiniog and Betws-y-Coed. It is a favored route among local touring cyclists for its varied Welsh landscape. The inclusion of gravel track alternatives, like the Dolwyddelan to Pont y Pant Gravel Route, provides options to avoid busier roads and experience different surfaces, adding to the adventurous character of the ride.

Embark on the Mawddach Trail Loop for a moderate touring bicycle ride that takes you through the heart of Eryri / Snowdonia National Park. You will cover 19.6 miles (31.5 km) with a gentle elevation gain of 795 feet (242 metres), offering a relaxed journey along the Mawddach Estuary. As you cycle, you will witness diverse landscapes, from tranquil woodlands and open meadows to wetlands, all framed by the impressive Rhinogs and Cadair Idris mountains.

Planning your visit is straightforward; the main trail is largely flat and well-maintained, making it suitable for most touring bicycles and family outings. The core route is almost entirely traffic-free, ensuring a peaceful experience. While the estimated duration is around 1 hour and 58 minutes, you can take your time to soak in the views. Parking is conveniently available at key access points in towns like Dolgellau and Barmouth, making it easy to start your adventure.

This route is notable for its iconic landmarks, including the historic Penmaenpool Toll Bridge and the impressive Barmouth Bridge, which stands as Wales' longest timber viaduct. The Mawddach Estuary itself is a designated Site of Special Scientific Interest, rich in natural beauty and ecological importance. You will find yourself immersed in a unique blend of Welsh heritage and stunning natural environment, making this loop a memorable experience.

Embark on a touring bicycle journey along the Menai Strait, offering panoramic views of Anglesey and the distant Snowdonia mountains. This moderate route covers 25.1 miles (40.4 km), gaining 758 feet (231 metres) in elevation, and typically takes about 2 hours and 30 minutes to complete. You will cycle past the historic Caernarfon Castle, a striking landmark on the water's edge, and experience diverse terrain from dedicated cycleways to quieter roads. The atmosphere is a blend of coastal tranquility and historical grandeur, making for a memorable ride.

Planning your ride is straightforward, with parking generally available at Port Dinorwic, Caernarfon, and Dinas Dinlle, providing convenient starting points. The trail primarily uses paved surfaces, including dedicated cycleways, making it accessible for touring cyclists. However, be aware that some sections may include minor roads, street portions, or short stretches of unpaved ground or cobblestones. These varied surfaces add to the route's character, but it is good to be prepared.

This route offers a unique blend of natural beauty and historical significance as you follow the coastline. You will encounter the ancient hill fort at Dinas Dinlle, providing expansive sea views, and the picturesque Port Dinorwic Marina. The journey also incorporates sections of the Caernarfon Cycle Path, ensuring a pleasant and dedicated cycling experience for part of your adventure.

Embark on the Beddgelert & Aberglaslyn loop from Porthmadog, a difficult touring bicycle ride through Snowdonia National Park. This challenging 32.5-mile (52.4 km) route features a significant 1651 feet (503 metres) of elevation gain, taking you about 3 hours and 15 minutes to complete. You will cycle through picturesque farmland, past traditional stone fencing, and enjoy views over rolling countryside and Mount Foel, with the spectacular Aberglaslyn Gorge offering a dramatic highlight where the Glaslyn River tumbles alongside rocky cliffs.

To tackle this route, you should have very good fitness and consider a robust touring bike or a sturdy hybrid, as some segments may be unpaved and difficult to ride. While the loop primarily uses paved roads and cycleways, be aware that some on-road sections can be busy at times. Starting from Porthmadog, this loop is designed for experienced touring cyclists ready for varied terrain and demanding climbs.

This loop is a popular choice for its extensive views within Snowdonia National Park, blending natural drama with serene valley scenery and local history. You will pass historical sites like Gelert's Grave in Beddgelert village, the tranquil waters of Llyn Dinas, and the old copper mine workings of Sygun. Although National Cycle Route 8 is in the general area, this specific loop offers its own unique journey through the heart of North Wales.

This moderate touring bicycle loop takes you through diverse landscapes, covering 24.9 miles (40.1 km) with an elevation gain of 1229 feet (375 metres). You can expect a varied ride, blending smooth, traffic-free paths with quiet country lanes. The Lôn Eifion section offers expansive views across the Llŷn Peninsula and Caernarfon Bay. As you transition to Lôn Gwyrfai, the route leads you through the Gwyrfai Valley, providing vistas of Yr Wyddfa (Snowdon) and passing the ecologically valuable Llyn y Gadair lake. The entire journey typically takes around 2 hours and 29 minutes to complete.

While the Lôn Eifion section is well-surfaced and largely traffic-free, be prepared for varied terrain on the Lôn Gwyrfai path, which includes crushed slate and gravel, along with some steeper sections. For the most comfortable experience on this route, a hybrid or mountain bike is recommended over a road bike. You will also encounter some on-road sections that connect the two main trails.

This route offers a unique opportunity to explore Eryri / Snowdonia National Park by bike, combining coastal views with mountain scenery. Keep an eye out for steam trains along the Welsh Highland Railway, which you can glimpse at various points. The blend of dedicated paths and quiet lanes makes this loop a rewarding way to experience the region's natural beauty and historical transport.