The invention relates to a roller bearing for linear movements, said roller bearing comprising a guiding carriage which is essentially C-shaped in the cross-section thereof, is displaceably guided on a guiding rail in the longitudinal direction thereof, and comprises two lateral limbs. The carrier body of the roller bearing is supported in the region of each lateral limb in such a way that it can be displaced on the guiding rail by means of at least one series of rolling bodies. The series of rolling bodies respectively comprises a load-transmitting row of rolling bodies, which engages with a load-carrying running path of the carrier body and a load-carrying running path of the guiding rail, in addition to an inverted row of rolling bodies and two defecting rows of rolling bodies. In order to form the load-carrying running path of the carrier body, a running path element is provided parallel to the longitudinal direction of the guiding rail. According to the invention, the running path element is embodied as a hardened sheet metal element which is arranged and fixed in a receiving region on the respective lateral limbs of the carrier body.