Abstract: A portable rider-propelled roundabout includes a platform having a circular track formed by a pair of semi-circular halves, a plurality of pedal-propelled riding cycles, and a revolving mechanism operable for supporting the riding cycles upright on the circular track for undergoing revolving movement therealong about a center point defined by the circular track. The platform also including reinforcing frameworks extending between and rigidly connected with spaced portions of the respective track halves and pivotal hinges connecting the track halves together for pivotal movement about a longitudinal axis so as to permit converting the platform between a transport condition in which the track halves are disposed in a side-by-side folded relation to one another and a deployed condition in which said track halves are disposed in an unfolded coplanar relation with one another.