Saturday is Bark In The Park, the Anti-Cruelty Society's 19th annual 5k/3.2 mile run (for people) walk (with or without your dog) to raise funds and awareness for The Anti-Cruelty Society, Chicago’s oldest and largest, private, open-admission humane society.
You can still register the morning of the run/walk, at Montrose Harbor starting at 7am at the red registration tents.
The run will kick off at 9am, and the walk at 9:15am. Afterwards, there's a ton to do with Fido: dog obstacle course; Denise Zak, Pet Psychic; pet massages; dog tattoos; nail clipping spa; souvenir photo booth; product samples from our sponsors; free snacks; random raffle; 50/50 cash raffle; and more. Here's the page with all the information.