Photos: England's Maldon Mud Race

Revelers take part in the Maldon Mud Race at the start of the event on Sunday, May 5, in Essex, England. The race, which originated in 1973 and involves competitors racing around a course on the mud banks of the River Blackwater, raises money for charity.

Revelers take part in the Maldon Mud Race at the start of the event on Sunday, May 5, in Essex, England. The race, which originated in 1973 and involves competitors racing around a course on the mud banks of the River Blackwater, raises money for charity.