Trailwalker is an epic endurance challenge for teams of four. This July, 550 teams will trek 100km in 30 hours across the stunning South Downs National Park.
Unfortunately entries have now closed for this year's Trailwalker. We're sorry if you missed out on the chance to take on the challenge, but keep an eye on the website as we'll soon be adding information about the 2014 event.
If you're still keen to get involved in 2013, have you considered volunteering at Trailwalker? Experience all of the excitement of the event but with less strain on the knees!