A bicycle roller assembly, comprising a frame having a length and including two parallel rods running in the lengthwise dimension of said frame and having a front roller and a pair of rear rollers mounted between said parallel rods. In addition, a base assembly including a set of feet is adapted to rest on a surface. Finally, a support assembly is supported by said base assembly, and includes a set of linear bearings, into which said parallel rods are mounted, so as to permit movement in said lengthwise dimension.