After the application of this new regulation, each athlete is compelled to transport his own container of any type he/she thinks it serves him/her better (e.g. hydration bladders, plastic bottles, cups,etc.). The volunteers at the refreshment & catering stations will provide the necessary liquid volume that it corresponds in each athlete, but only at the athletes own container. Exception in the new regulation is the 1st station of the race, where recyclable paper cups will be offered . The application of this new regulation aims in the reduction of plastic material that is used globally in the race, after taking into consideration that every year more than 7000 disposable plastic cups are being spent, which are not recyclable. Moreover, the pollution threat that mountain Olympus (which is a highly sensitive and protected region) faces, will be reduced significantly. OLYMPUS MARATHON