Abstract: Wheelchair trainer apparatus for use with a four-wheel everyday or sports wheelchair. The trainer includes a support plate carried by the trainer frame for holding the wheelchair front caster wheels in a position such that the wheelchair drive wheels drivably contact a roller with the center of each of the drive wheels directly vertically above the roller's rotational axis. In a preferred embodiment, the plate alternatively holds the wheelchair front caster wheels in a second position such that the wheelchair drive wheels drivably contact a second roller with the center of each of the drive wheels directly vertically above the second roller's rotational axis.