Want to swim a marathon in Hawaiʻi?
Presenting your next target
HOW is an informational and database service only. HOW provides limited information for marathon swims among the Hawaiian islands, certifies successful swimmers who complete these swims with adequate documentation, and records the certified swim on electronic media.
ALL SWIMMERS SWIM AT THEIR OWN RISK. HOW recommends against any swimmer taking on any open water swim without the necessary training, preparation, research, and safety planning. It is absolutely the swimmers responsibility to plan all aspects of their swim and to verify that they are in adequate health prior to engaging in any open water activity.
Hawaii Open Water
Established 2025