A riding device includes one or more cranks rotatably attached to a base, and a rider support supported on a carrier and movable relative to the base for supporting a rider, and a moving device for moving the carrier and the rider support relative to the base in an elliptical and reciprocating action, the rider support may be moved in different moving strokes relative to the base and may be adjusted up and down relative to the carrier. The base includes a column having a pivotal arm coupled to the carrier with a link for allowing the carrier and the link to be moved up and down relative to the base and for allowing the carrier and the rider support to be moved in different elliptical and reciprocating actions by the crank.