Hundreds of people are set to push their bodies to the limit on a Royal Marines-style endurance course to raise cash for wounded troops.
The Endurer Dash event is taking place for a fourth time in October at Barlow, organised by gym owner and former Marine Pete Pollard.
The most recent event, in April, raised between £1,500 and £2,000 for Help for Heroes in entry fees alone - with participants collecting more in sponsorship.
Pete, from Hathersage, has created the course based on the Royal Marines’ Commando course.
Highlights include ‘Heart Attack Hill’ at the start of the race - a steep gradient of several hundred metres - before obstacles including swamps, walls and a chilly lake to swim through.
Pete said: “The event has been a success in terms of helping the charity but it’s also great fun.
“We’ve gradually made the course harder.
“The winner last time finished the eight kilometres in just over 50 minutes, which is slower than previous winners and shows it is becoming more difficult.
“In our first race, the fastest time was 40 minutes.”
He added: “There’ll be a few more changes this time around, too, which may include a run carrying logs along part of the course.”
The next raise is on Saturday, October 5, off the B6051 road between Owler Bar and Barlow.
Entry is limited to 500 people with places costing £34 for individuals and £32 per person for team entries.
Visit the website www.endurerevents.co.uk for further information.