Swimming Extreme Sports Club Atos Sava Brčko was established in 2016. It was founded by a group of enthusiasts who love open water swimming and primarily carry out their activities on the Sava River. The Association organizes the 10-kilometer-long International Swimming Marathon, the first of its kind in Bosnia and Herzegovina.
Bearing in mind training of its members, the Association has acquired a diverse range of boats, as well as trained members who can provide safe navigation, swimming and sightseeing of the natural beauties of the Sava River.