Thousands of people are expected to turn out for the second day of the Tough Mudder in Dumfries and Galloway.
The event, at Drumlanrig Castle, is billed as the toughest endurance challenge is the world. Participants jump into pits of nettles, walk through fire, and be shocked by electricity on the twelve-mile course.
It's the first time the Tough Mudder has come to Scotland.
More top news
A look ahead at the weekend forecast for the Border region.
Cumbria Chamber of Commerce says 'Cumbria has been a major beneficiary of EU funding over the years'
Jamie Reed MP has said that "...many people have voted to make their lives worse because they don’t believe that life can get better."