A loop from Grosmont linking the three Norman castles of Gwent: Grosmont, Skenfrith and White Castle, back over the hills by Llangattock Lingoed.
Distance: about 37 km (23 miles), round trip, measured along the line on the map below.
The line follows waymarked footpaths and is a guide to the route, not a substitute for a proper map. Carry an Ordnance Survey map, check the weather before you set off and allow plenty of time.
Walk it with us
Our Three Castles Walk holiday takes in this part of Wales, with accommodation booked, your luggage moved each day and route notes provided.
Photo: Jeff Gogarty, CC BY-SA 2.0, via Geograph.