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To be titled "", the film will follow Strel as he attempts to cover 3,375 miles in what is being billed as the world's longest swim. Strel, who hails from Slovenia, previously completed record swims in the Danube, Mississippi and Yangzte rivers and holds several Guiness World Records.

How to Watch Big River Man Legally and Safely

If you want to stream Big River Man through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry Big River Man films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.