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
50-year-old Tyrone Glaister has been jailed after stabbing a man in a Whitehaven pub with a hunting knife.
A father and son from Jedforest Hunt have denied breaking Scotland's fox hunting laws, after a video showed a fox being chased by hounds.
Angela Laskey was found with multiple stab wounds in an apartment in Santa Barbara in 2014.