(Brooklyn, IA) -- Today marks six years since the disappearance of Mollie Tibbetts. She was a student at the University of Iowa, and never returned. A man has been convicted of murder in the case. Mollie's Ride, a parade of motorcycles, will roll through several Iowa communities to honor her memory on Saturday. It starts and ends in Brooklyn, with stops along the way in Garwin, Lincoln, Marshalltown, Melbourne and Gilman. The proceeds from the registration fee will go to Tibbetts' memorial fund, which goes to the University of Iowa Stead Family Children's Hospital.