In March, the group went on a short business trip to the United States, to Los Angeles, where "American" episodes were staged over five days of shooting.
Actors of the Novorossiysk People's Drama Theater were involved in the crowd scenes.
"Marathon' is the second collaboration of Karen Oganesyan and Mikhail Porechenkov.
The shooting took place in the winter and spring of 2012.
One of the scriptwriters Irina Pivovarova starred in a cameo role in the film.