Longest distance ocean swim (marathon swimming)
Who
Veljko Rogošić
What
225 kilometre(s)
Where
Italy (Riccione)
When
Age Restriction: Applications for this record title will only be accepted if the applicant is 16 years of age or over.

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.