Abstract: The “Pedalong” is a propulsion and exercise device attaching to a conventional wheelchair having: a drive support system attaching to the wheelchair frame and supporting a drive main frame; a propulsion system including an input unit operated by the user proximate the front end; and further including at least one drive wheel operably interposed between the rear set of wheelchair wheels. a power transmission assembly interposed between the input unit and the drive wheel to transmit power from said input unit to the drive wheel when engaged by the user to propel the device. The propulsion system can be: belt driven; chain driven; shaft driven; fluid power driven; or electrically driven. The input unit is mounted at a forward end of the main frame, so as to be adjustable in length.