An upright step cycle comprises a two wheeled bicycle, with two non-aligned foot support members (10) attached eccentrically to each crank arm (12) at one end, and at the other end, free to slide up and down along a straight guide track (16), producing an elliptical pedalling profile. A means by which to vary the guide track inclination angle, in order to produce a wide range of pedalling motion profiles. At lower inclination angles of the guide track, the stepping motion may resemble cross country skiing. At higher angles, the stepping motion may simulate walking, jogging, running or climbing. The guide track angle may be varied manually by the rider as the bicycle is in motion, therefore dismounting from the vehicle is not required. A system of gears (28 and 29) similar to those found on a standard bicycle, provide speed to power drive ratio adjustability to the driving wheel (21). A removable seat or leaning pad may also be included in the design. The upright step cycle uses standard bicycle parts thereby resulting in minimal re-tooling costs.