The walk route covers some of the most dramatic scenery in the UK. It starts at HALO's HQ near Thornhill, Dumfries & Galloway, and takes a circular route in the foothills of the Lowther Hills.
While you'll certainly earn your sponsorship money, the route is designed to be accessible to different fitness and ability levels. We expect it will take six to eight hours to complete.
There will be medics, stewards and refreshments points on the route. A barbecue and celebration will be held at the end.
If you're coming from afar see our FAQs for local accommodation and camping options for the night before and after the walk.