Runners struggle through the waist-deep, cold muddy water during the third annual Dirty Dog Run at Thomas College in Waterville on Sunday. More than 600 people participated in the obstacle course, including sports teams, fitness groups, families, central Mainers, New Englanders and casual runners.
Thomas College alumni Sahil Sanan, left, and David Pease wore tutus.
Gina Rich flips heavy tires that were part of a muddy obstacle course.
Erica Bean and other racers carry bucketloads of mud during one of the events.
A runner comes into the finish line past spectators.
Runners, momentarily clean and dry, are off and running at the beginning of the muddy obstacle course during the Dirty Dog Run.
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