Abstract: A sailboat spar track cleaner for cleaning a sail track on a mast or other spar comprises a U-shaped housing that fits over the track, with adjustable track cleaners having abrasive contact surfaces extending inwardly from the sides of the housing into contact with the track. An adjustable spacer attached to a back of the U-shaped housing bears against the track and controls the position of the housing so that the track cleaning elements are properly aligned with grooves in the track. The track cleaner is mountable on a track in a sailboat and movable along the length of the track using conventional lines, such as the halyard and a downhaul in the case of a mast.