Cwm Idwal & Y Garn loop from Ogwen Cottage — Eryri / Snowdonia National Park

Embark on a challenging yet rewarding hike through the dramatic glacial landscape of Cwm Idwal and up Y Garn, starting from Ogwen Cottage. This moderate to hard loop covers 4.6 miles (7.3 km) with a significant elevation gain of 1985 feet (605 metres), typically taking around 3 hours and 6 minutes to complete. You will navigate varied terrain, from stone-surfaced paths around tranquil Llyn Idwal to rough, steep ground and scrambling sections through the iconic Devil's Kitchen, all while surrounded by high crags and breathtaking panoramic views across Snowdonia from Y Garn's summit.

Before you set out, be prepared for demanding conditions; good walking boots are essential due to uneven and potentially slippery surfaces, especially after rain. The trail is exposed, so you should be ready for changing weather and have some mountain experience. The ascent to Y Garn, particularly via Devil's Kitchen, requires sure-footedness and a good level of fitness, as it involves sustained steep climbs and descents. Always check the weather forecast before heading out to ensure a safe and enjoyable experience.

This area holds immense geological and ecological significance, with Cwm Idwal being Wales' first designated National Nature Reserve. It showcases spectacular glacial landforms and unique geology, which even Charles Darwin studied in 1842. The route is also home to rare Arctic and alpine plants, adding to its biodiversity. Y Garn, the tenth highest mountain in Wales, offers some of the best views in Snowdonia and is often a quieter alternative to other popular peaks, providing a memorable connection to the region's natural history and beauty.