Glyders, Ogwen Valley & Llanberis Pass loop from Bethesda — Snowdonia National Park

Embark on a challenging racebike loop through Snowdonia National Park, covering 30.6 miles (49.3 km) with a significant 2346 feet (715 metres) of elevation gain. This route, which takes about 2 hours and 29 minutes to complete, offers dramatic mountain landscapes and a mix of historic industrial heritage. You will cycle past the stunning Llyn Ogwen, with the imposing peaks of Tryfan and Pen yr Ole Wen as a backdrop, before tackling the spectacular road climb of Llanberis Pass, framed by Snowdon and the Glyders.

This loop is considered a moderate road ride, but it demands very good fitness due to its significant climbs and varied terrain. While most surfaces are well-paved, be prepared for some unpaved sections that can be challenging and might even require you to push your bike. Planning your ride with good fitness in mind will ensure you can fully enjoy the demanding ascents and the rewarding descents.

The route is notable for traversing some of Snowdonia's most iconic landscapes, popular with outdoor enthusiasts. A significant part of the journey includes the Lon Las Ogwen cycleway, celebrated as one of North Wales' finest cycle trails, which follows a former railway line and offers a gentler experience with spectacular views. You will also gain insight into the region's rich geological and industrial history, with glimpses of the slate quarrying industry, including the Penrhyn Quarry.