A bicycle parking rack includes a base to which a first portion is connected. Two first parts are adjustably connected to the first portion. A second portion connected to the base at an angle. The second portion includes a first tube, a second tube and a third tube. A second part is adjustably connected between the first tube and the third tube. A bicycle wheel contacts the two first parts and the second part to form three contact points. The second tube is inserted into the upper end of the first tube and includes a hook end which may hook to an inner periphery of a bicycle wheel. A connection unit is removably connected between two respective bases of two parking racks.