Team spokesman Aaron Gautreau says Annaleise Carr ended her swim at 4 a.m. ET at Long Point, Ont., a few hours short of Port Dover, Ont., where she had initially planned to arrive around 11:30 this morning.
Gautreau says the swim was still a great success, as Carr raised around $130,000 for Camp Trillium, a childhood cancer support centre.
The native of Walsh, Ont., had been swimming six to eight hours a day to prepare for what she expected would be a gruelling 30-hour swim.
Two years ago Carr swam across Lake Ontario at the age of 14, becoming the youngest person known to have ever accomplished the feat.