The HOH 5k is a fundraiser organized by the Northbrook District 28 PTO Council to benefit the Homer O. Harvey Scholarship Fund. Volunteers from local schools assist in organizing the event, which includes a chip-timed 5k race for runners and walkers, as well as a fun run for children aged 6 and under. Strollers are allowed, but dogs, bikes, and rollerblades are not permitted. The race starts with a group format, and participants can view their results immediately after finishing.