The magnificent prehistoric stone circles of Stonehenge and Avebury need little introduction. We start in Stonehenge, the most famous stone circle in the world!

Crossing into MOD land, we walk through beautiful areas little-used by the general public and a haven for wildlife and plants. Our route takes in the highest point in Wiltshire (295m) and goes through the most active crop circle area in the world, so keep your eyes peeled! We cross spectacular chalk downs dotted with ancient earth-works, burial mounds and enigmatic white horses carved into the chalk. We then head towards the famous ancient landmark of Silbury Hill.

After a long day of beautiful views and leg-stretching hills, we reach our destination: atmospheric Avebury, where we can get up close to the ancient stones.

This is a tough event over the high chalk downs and ridgeways of Wiltshire and Salisbury Plain. At 26 miles it forms an enormous challenge for walkers; you can run or jog if you prefer.

Our challenging day starts at World Heritage Site of Stonehenge! Continuing north along good tracks we cross part of the large expanse of the MOD training area. We soon pick up the Kennet & Avon Canal and head west on a welcome section of flat land dotted with farms and hedgerows. We pass through the village of Alton Barnes before climbing onto the chalk downlands which will take us close to one of the white horses that make this area famous.

Skirting a prehistoric long-barrow, we climb steeply up onto a ridge and follow this through beautiful country-side. We head via the mysterious landmark of Silbury Hill and start to anticipate the finish line at Avebury.

There is time to celebrate with your fellow walkers and runners before returning home.