The RAGBRAI pre-riders follow their escort into Charles City on South Main Street. Submitted photo By Mitchell Hanson, mhanson@charlescitypress.com Around 20 bicyclists came to visit Charles City Thursday as part of the RAGBRAI “pre-ride.” Just as a group does before every RAGBRAI, these pre-riders are biking the entirety of the planned route of this year’s Register’s Annual Great Bicycle Ride Across Iowa, to make sure the path is a safe …