UP TO 700 people are expected to bathe themselves in mud on Sunday for the third Tas Mud Run at Evandale.
Competitors will be required to test themselves on about 30 obstacles on a five-kilometre course of walls, a slippery slide, hay tunnels and an ice bath challenge named the Arctic Enema.
Race director Rob Gillard said the first two events, held last year, had proved immensely popular with competitors and spectators alike.
He said the event catered for a range of ages and abilities, from a one-kilometre children's run to the full course.
``People have a lot of fun with it, and it's a family-friendly event,'' Mr Gillard said.
``People just love getting cold and messy.''
He said the event, held on the Van Dieman Brewing property, was not just a race, and prizes would be awarded for the best-dressed racers and children.
The event will be run in separate waves, with the competitive wave to start at 9.30am.
Competitors are encouraged to register online at www.tasmudrun. com.au before the event but can do so on the day.
Beer, coffee and food will be served throughout the day.
Another mud run will be held on September 22.