They scaled walls, darted through the woods, sloshed through the river, hopped through a trail of foam lillypads and bounced through Mill Pond Park. To finish the three-mile obstacle course, they slid down a wet tarp at the gates to the Celtic Festival.
And mostly, they wore big old smiles on their faces - even when mistakes left them waist-deep in the Saline River.
In the age of military-style bootcamp fitness events, that's what makes the Celtic Mastodon Challenge a special event.
"Look at those smiles. They're having a lot of fun. That's what makes this so awesome," said Riley Hollenbaugh, Director of Saline Main Street.
About 200 people pre-registered for the event, co-sponsored by Saline Main Street, Saline Parks and Recreation and Workout 1. Many more registered on Saturday morning before the event began. Kids and adults ran in the event. In addition, there were seven teams in a corporate challenge Friday. Transtar, a company in Brighton, won that event.