Longest ocean swim
Who
Veljko Rogosic
What
225 kilometre(s)
Where
Italy Riccione
When

The longest distance ever swum without flippers in open sea is 225 km (139.8 miles) by Veljko Rogošić (Croatia) across the Adriatic Sea from Grado to Riccione (both Italy) from 29-31 August 2006. The attempt took him 50 hours 10 mins.

The distance swum is by GPS.