Located between London and the south coast, the South Downs National Park is famous for rolling hills, pretty villages and beautiful landscapes. People have travelled along the South Downs Way trail since the Middle Stone Age over 8000 years ago, and you'll be tracing their footsteps as you take on this incredible challenge.
You'll see some of the best sights that the UK has to offer - the famous beauty spot Devil's Dyke, the Iron Age hill fort at Chanctonbury Ring and the twin windmills at Jack and Jill hill.
There are checkpoints roughly every 10km along the route, where you can use the facilities and get first aid or a massage if needed. Your Support Crew will meet you at the checkpoints so you can top up on supplies, change your kit, and get some welcome encouragement.
The Trailwalker route covers an overall ascent of 2,500m - the same climb as Ben Nevis and Snowdon combined.
The route is largely off road and you'll cover all sorts of terrain, from open countryside to steep scarp slopes, woodland areas to the banks of the river Adur. It's wild but beautiful.