A new monthly charity lottery promises prizes of about £500.
It will be launched by the Maldon Mud Race committee at the race on Sunday, May 25.
Chairman Brian Farrington said: “We are really excited about this project.
“While we can’t promise to make any Maldon millionaires, we do hope that we will bring smiles to a few faces with regularly monthly winning of around £500.
“We will also have two bonus months where we hope that figures will be closer to £1,000."
Money raised will help expand the mud race event and go to local charities.
It will cost from £1 a month and the names of winners will be posted online at maldonmudrace.com