This is the stage most people picture when they imagine Hadrian's Wall: the Whin Sill escarpment, a dramatic dolerite ridge the Romans built directly along the top of, with the trail climbing over Windshields Crags — at 345 m, the highest point on the entire route. Shorter on paper than Stages 1 or 2, but harder underfoot; budget more time than the mileage alone suggests.

Housesteads Fort, the most complete Roman fort in Britain; the Sycamore Gap site at Milecastle 39, where the famous tree stood until it was illegally felled in September 2023 (its stump is alive and resprouting); and repeated steep, short climbs and descents along the crag edge.

Once Brewed, the overnight stop, is a hamlet built around a single visitor centre and a handful of places to stay — book ahead. The 122 bus stops here, making this stage the easiest to break into a shorter day trip instead of a full overnight stage.

The stump has been fenced with protective netting and is now sending up around 25 new shoots; the National Trust and Northumberland National Park plan to let them grow for several years before deciding whether to manage the site as a multi-stemmed coppice or reduce it back to a single trunk. Forty-nine saplings grown from the original tree — one for each foot of its height — have separately been gifted to communities across the UK as the “Trees of Hope.”