An upright bicycle carrier may include an elongate base having a pair of parallel rails and a hoop-style wheel capture device. A rear wheel receiver may be adjustably coupled in sliding engagement with a first slot in each of the rails, and a rear crossbar clamp may be adjustably coupled in a second slot in each of the rails, such that the receiver and the clamp are capable of overlapping adjustment ranges. The wheel capture device may include a pair of hoop structures pivotable on a same axis of rotation and securable by a rotatable locking knob.