Scaling walls and crawling under wires - more than 100 athletes performed moves you might see in basic training in honor of Memorial Day.
It's Quest for the Vets, hosted by Victory Quest in Lincoln.
The 5K run features 24 obstacles, mud and a lot of sweat.
But for these racers, it's not all about the slipping and sliding.
A portion of the proceeds benefit local veterans' organizations.
Participants say it's a great way to give back to our soldiers, while challenging themselves to push their limits.
The race had categories for men, women and teams.
There was also a 3/4 mile kid's race.
Organizers of the run say they hope to make Quest for the Vets an annual event.