Three Castles Walk, Grosmont, Skenfrith & White Castles Walking Map

The Three Castles Walk is a waymarked, circular trail of about 19 miles (32 km) through north‑east Monmouthshire, weaving between the imposing Norman fortresses of Skenfrith Castle, Grosmont Castle, and White Castle. Designed to be completed in a full day or split over two, the walk travels through gently undulating countryside, wooded valleys, and open pastures. The most striking elevation comes from Graig Syfyrddin (also known as Edmund’s Tump), a 423 m hill offering panoramic views across the Black Mountains, Forest of Dean, and the Welsh Marches. The route is waymarked with distinctive brown-and-white discs bearing a castle emblem, ensuring walkers can follow the path without difficulty.

Beyond its historic castles, the walk is steeped in heritage and natural charm. Original Norman earthwork and stone castles remain in varying states, with Grosmont Castle offering evocative ruins, Skenfrith nestled by the River Monnow, and White Castle perched above farmland with expansive views. The route links with the Offa’s Dyke Path extending its appeal. Walkers will traverse tranquil woods, cross minor rivers, and pass historic farmhouses and churches. The area’s cultural landscapes – hedgerows, bridleways, and iron-age field patterns – add depth and character. The Three Castles Walk is a deeply rewarding blend of hill walking, heritage, and Welsh borderland storytelling.