Diana Nyad, 61, hopes to become first person to swim from Cuba to Florida without aid of shark cage. (Credit: AP Photo/Franklin Reyes)
MIAMI (CNN) -- Endurance swimmer Diana Nyad will make another attempt to swim between Cuba and Florida, she has confirmed to CNN.
"Heading to Cuba," she said in an email, capping weeks of wrestling with the decision.
Nyad, 62, said she plans to jump into the water from the Hemingway Marina in Havana late Friday evening. She expects the 100-plus mile swim to take close to 60 hours. If she completed the attempt, she would set the world record for the longest ocean swim without a shark cage.
Nyad attempted this swim in early August and had to be pulled from the water after some 60 miles, and almost 29 hours of swimming. She blamed a shoulder injury she suffered early in the journey, and an 11-hour-long asthma attack. Nyad says she believes the asthma attack followed an allergic reaction to pain medication she took for the shoulder injury.
In an interview several weeks after the August attempt, she told CNN's Dr. Sanjay Gupta she was still strong, and was not ruling out another attempt.
"I am capable of swimming from Cuba to Florida, and I will give it up, if I just can't make it," she said, "but I didn’t prove that to myself in this particular swim."
To attempt this swim again, Nyad said she would need good weather, calm waves and warm water, though she was willing to swim in slightly less optimal conditions than she once thought she needed.
"I used to have almost a paranoia of waiting for the [ocean] surface to be [completely] flat," she told Gupta. "[During the August attempt] we were out in some slappy waves, and it wasn’t fun, and you can’t glide across the surface, but I can make it."