Last year, the competition attracted 38 competitors and a crowd of 500. Organiser Ralph Burrell said entries this year had been received from four-wheel-drive enthusiasts from Bluff, Christchurch and Geraldine, all keen to take on the "extreme" challenges on a 12ha course at Gemmells Crossing on June 30.
Mr Burrell said there would be three categories in the competition, which would cater for standard road vehicles, modified vehicles and an open round, which would feature super-modified machines.
The latter would be a "no-holes-barred" challenge, with hazards "not for the faint-hearted," he said.
"Everyone starts with a clean slate, but de-merit points are awarded for hitting obstacles.
"At the end of the day the person with the least points wins.
"Proceeds go towards Rotary Club projects, be it locally or nationally. Last year we raised $6000 and the kids from Totara School, who do the catering, raised more than $1000 for the school.
Oamaru driver and Mud Plug regular Brian Kyles, said he was looking forward to putting his supermodified "Chevyota" through its paces.
"It is powered by a Chevrolet V8 and the body is a Toyota."
He said the event promised to be a great day of entertainment, for both little children and adults, and added that getting a face-full of mud was all part of the attraction for both drivers and spectators.
"It is a great chance for spectators to . . . get covered in mud.
"Last year year was great. You've never seen so many beaming faces."
