Abstract: A portable apparatus for retaining a bicycle in the manner of a conventional bicycle repair stand, and which can be used in conjunction with a conventional sports rack attached to the roof of a car or van. The apparatus can be attached to the conventional bicycle sports rack which is attached to the roof of a car and therefore utilizes the car and the sports rack as the supporting body framework to hold and support a bicycle in any desired orientation. The apparatus comprises an elongated member whose exterior cross-sectional dimensions are slightly smaller than the interior cross-sectional dimensions of the elongated base of a conventional sports rack attached to the roof of a vehicle, and is fitted into the interior section of the elongated base of the sports rack and retained therein by a press fit. Additional portions attached to the elongated section support a clamping mechanism which can retain a portion of a bicycle such as the horizontal tube of the frame.