U.S. Masters Swimming Champion Meredith Novack of Oahu has now secured another title.
She is the first woman to swim from Lanai to Maui and back in one day.
The 37-year-old triathlete took off from Club Lanai on Sunday, swam to Mala Wharf on Maui, and returned to Lanai.
The swim took 11 hours and one minute.
Novack broke the old record set by Peter Attia by 44 minutes.
Novack battled exhaustion and a close encouter with sharks to get the record. She says two tiger sharks were swimming near her but she didn't even know about it until her crew told her after the swim.
"By the time the shark charged the kayak, we had two hours to go and it probably would have stopped the swim. We were safe and we were OK," said Novack. "I am always a little bit nervous out there. That's just a part of me but, hey, I did it! Yay!"
Next up, Novack wants to swim a loop around Oahu, swim across the Kaiwi Channel and, possibly, the English Channel.
Her swim still needs to be verified before she officially becomes the record holder.