I got separated from the group twice during the ride. It was a combination of inexperience riding with a large group and a carburator that kept flooding and stalling.
While I WAS with the group, I noticed that part of the route between the Bike museum and the lunch stop followed red and yellow arrows painted on the roads. I started following that and worked my way back to Liberty, Sassafras, and Lorigan.
Were those arrows part of the Pedal Pittsburgh route from late August?