With each step, every Great Strides participant makes a difference for people living with cystic fibrosis (CF). The walk starts and finishes at the Harris Pavilion, goes through Historic Downtown Manassas, and culminates with a family friendly party with food! Click Register to Walk as an individual, to form a team, or to join a team. Great Strides is an annual event organized by the Cystic Fibrosis Foundation with walks in communities throughout the nation.