- Dennis Klaaijsen
- 695.7 kilometre(s)
- Netherlands ()
The greatest distance on a windsurfer (flat water) in 24 hours is 695.7 km (432.28mi) and was achieved by Dennis Klaaijsen (Netherlands) in Zeeland, Netherlands, on 10-11 August 2014.
Dennis beat his current record by over 80km to achieve the title.