UltraSwim 33.3 Montenegro

Embark on the ultimate swimming adventure with UltraSwim 33.3 Montenegro, the 'Fjords to the Sea' edition on October 2-5, 2026. This groundbreaking event breaks the classic English Channel distance into a manageable 4-day journey, offering both the full 33.3km "Classic" and a shorter "33.3/2 BUILD" option for those building their distance. You'll experience a truly unique course that weaves through history and nature, from swimming around the transformed Mamula prison island to exploring a giant blue cave. The inclusive format, with options for wetsuits or skins, ensures that any determined open-water swimmer can take on this life-changing challenge. Secure your spot for a meticulously organized expedition that redefines the possibilities of adventure swimming.