Head to Hanson Hills Recreation Area in Grayling for this AuSable River Festival running event, where you can choose between a 10K or 5K road race (no walkers permitted). Check in runs from 7:30-8:30 am with races starting at 9:00 am for the 10K and 9:05 am for the 5K, and you'll enjoy chip timing, a raffle for running shoes from Northbound Outfitters, and medals plus custom t-shirts for the first 250 finishers. Register online for $30 (10K) or $25 (5K), or sign up race day for $35 or $30 respectively—plus all runners have a shot at overall male and female awards.