The longest running 10k race in Michigan begins tomorrow in Cadillac.
The Festival of Races will celebrate it's 40th Anniversary in Downtown Cadillac.
The event has expanded to include a 5k race and a triathlon.
The triathlon is running, biking, and kayaking.
Registration is open until 8:30 tomorrow morning, with the races starting at 9 a.m.
There are also events in the park, live music, food vendors, and a beverage tent.
The festival will honor two special participants this year.
The two runners have run each race in the event's 40 year history.