The present invention provides an athletic hydration system for cyclists which includes up to four containers having inverted fluid-filled bottles contained therein, in which the containers are placed either within the frame of a bicycle or at the rear of the bicycle behind the bicycle seat. A system of valves determines whether a cyclist drinks from one, two, three or all four fluid-filled bottles simultaneously. The athletic hydration system is hygienic, versatile and flexible, and provides adequate hydration over extended periods of time in which quick removal and installation of hydration products are possible by the cyclist while maintaining the speed, cadence and aerodynamic posture of the cyclist.