Mudventures Junior fun run Saturday, August 5. Mudventures junior fun run is back. hope the ninja boards, sprint under the misting tent, climb over the hay bales, and continue on through our obstacle course. be prepared to get wet. anticipate getting muddy. think about getting sudsy. from mud to bubbles, we've packed this course full of sloppy fun. children ages 5 to 12 will have a blast on this course as it weaves throughout the park district. fee is $20 per participant for pre-registration. same day registration is $25. fee includes race t-shirt (only guaranteed for pre-registrations), finisher medal and after party. registration deadline is july 14 to guarantee t-shirt. same day registration and check-in begin at 8 am. children will run in waves according to when they check in. first wave begins at 8:30 am. waves will start every few minutes and will end when all kids have run. registration ends at 10 am with the final wave immediately following. all participants must have a parent/guardian sign a waiver in order to run the race.