Racers of all ages ran through a muddy 5k course at Central Park in Milton on Saturday. The run raised money for Multiple Sclerosis research and ran through the day starting at 8am. Runners remarked that the course was more difficult than the last year's.
Runners climb into and out of a giant pit of mud along the 5K course of the Milton Mud Challenge, a race to raise money for Multiple Sclerosis research.
Photo By: Mark Kauzlarich
Part of the course included ducking (or swimming) under large walls, only to be greeted just a few hundred yards later with taller walls to climb, which of course, ended in another pit of mud.
Photo By: Mark Kauzlarich
A runner leaves one obstacle, and other racers in his rear-view mirror, on his way to the final section of the course at Central Park in Milton.
Photo By: Mark Kauzlarich
Firetrucks continually refilled the mud pits on the course, causing brief periods of clear water, before competitors trudged through the course and muddied everything up once again.
Photo By: Mark Kauzlarich
Sometimes it was a simple slip of the feet, and other times, a belly or back-flop was an intentional way to make a big splash, cool off, or get other competitors wet and muddy.
Photo By: Mark Kauzlarich
Austin Anderson grins through the mud that cakes his face and got into his mouth after traversing part of the course on Saturday.
Photo By: Mark Kauzlarich
Dustin Hendrickson of Beloit climbs down one hill only to face crawling through some tight drainage tubes on the Mud Challenge 5K course.
Photo By: Mark Kauzlarich
Once out of the drainage tubes, unsurprisingly, another deep pit greets competitors like Dustin Hendrickson as they carry on their run.

