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 45-year-old man has died following a fatal road collision in Tweedsmuir. Police Scotland are appealing for witnesses.
Police are appealing for witnesses following a serious road collision resulting in two 18-year-old women sustaining serious injuries.
Money is being raised for two west Cumbrian children with life changing medical conditions.