Mawddach - Ardudwy Trail

The Mawddach - Ardudwy Trail is 126.2 km long with 3,652 m of climbing, so it is usually planned as a multi-day walk rather than a single push. Many hikers break a route of this length into roughly 6 to 9 days, depending on daily mileage, weather, and how much time is spent on the hillier Ardudwy sections.

The Mawddach - Ardudwy Trail is a long-distance route in Gwynedd that links Barmouth, Dolgellau, Harlech, and Porthmadog. It combines the Mawddach estuary section around Dolgellau and Barmouth with the Ardudwy upland and coastal country to the north, creating a broad circuit through southern Eryri and the Ardudwy area.

The Mawddach - Ardudwy Trail is generally rated medium, but that still means a serious undertaking over 126.2 km. The total ascent is 3,652 m, so while some stretches are gentler, especially around the Mawddach estuary, the full route includes enough climbing and distance to require solid fitness and multi-day hillwalking experience.

Yes. The route links towns with useful public transport connections, including Barmouth, Harlech, and Porthmadog on the Cambrian Coast Railway, and Barmouth and Porthmadog also have bus links with Dolgellau. That makes it practical to start or finish different sections without needing a car shuttle across the full 126.2 km route.

The Mawddach section follows the Mawddach estuary between Dolgellau and Barmouth on the old railway alignment known as the Mawddach Trail. That part is about 15 km long and passes places such as Penmaenpool, Arthog, and Morfa Mawddach, with wide estuary views and a much gentler gradient than the higher Ardudwy ground.

The Mawddach - Ardudwy Trail is best understood as a long-distance circuit linking the Mawddach estuary with the Ardudwy uplands and coast. Because it connects places including Barmouth, Dolgellau, Harlech, and Porthmadog, it works well as a multi-day round that returns through a different landscape rather than retracing the same line throughout.