#21MONTENEGRO

In 1918, the dissolution of the Austro-Hungarian Empire left the Bay of Kotor in a state of sudden, uncertain transition, forcing the local maritime authorities to redefine the naval boundaries of what is now Herceg Novi. The deep-water channels that once served the Austro-Hungarian fleet now dictate the navigation of the #21MONTENEGRO, a grueling endurance challenge held in the Adriatic Sea. Swimmers entering these waters today cross lines once guarded by coastal fortifications, tracing routes that navigate the steep submarine topography of the bay where the seabed drops rapidly to significant depths just meters from the shore.

Race mechanics and logistics

The #21MONTENEGRO, organized by UltraSwim 33.3, offers two demanding distances: 16,650 meters and 33,300 meters. The event is scheduled for October 1, 2027, a period when the Adriatic temperatures begin their seasonal cooling, typically settling in the high teens to low twenties Celsius. Due to the extreme distances and the requirement for dedicated support, the logistics involve coordinated vessel assistance to manage the transit through potentially busy channels. The registration fees reflect the overhead of these mandatory safety protocols and the specialized maritime permissions required to close specific stretches of the bay to commercial traffic during the event. Wetsuit regulations align with standard open-water competition guidelines, though the buoyancy of the high-salinity seawater provides a distinct feel compared to freshwater lake swims.

Navigating the bay

Athletes must account for the local currents that fluctuate based on the narrow entrance to the Bay of Kotor, known as the Verige Strait. These currents are influenced by tidal shifts and freshwater runoff from the surrounding mountains, which can create distinct temperature layers during the long-distance effort. The 33.3-kilometer course demands constant tactical adjustments, as the wind funneling through the limestone cliffs can alter surface conditions rapidly. Navigating the stretch requires a focus on the distant landmarks of the bay’s perimeter rather than fixed buoys alone, as the scale of the course turns the horizon into the primary guide for the long-distance swimmer.