Isefjorden Crossing or Kryds Isefjorden is a 6 km open water swim in Denmark, co-organized by Peter Schultz. At the inaugural race on 7 August 2016, 115 people finished the tough 6 km challenge across one of the fjords of Denmark where strong currents, waves and turbulent water had to be overcome.
- 6 km Kryds Isefjorden that is touted as Denmark's most extreme swimming competition
- 1.5 km in Rørvig Harbor.
- 150m for 8-12 year olds, one of Denmark's open water swims exclusively targeted children.