Annette Bening
Diana Nyad
Jodie Foster
Bonnie Stoll
Rhys Ifans
John Bartlett
Ethan Jones Romero
Nico
Luke Cosgrove
Luke Tipple
Jeena Yi
Angel Yanigahara
Eric T. Miller
Coach Jack Nelson
Anne Marie Kempf
Candace
Carolyn McCormick
Elise
Marcos Diaz
Dude
Belle Darling
Diana, Age 5
Pearl Darling
Diana, Age 5
Johnny Solo
Aris
Anna Harriette Pittman
Diana, Age 14
Hanler Rodriguez
Miguel
Harraka Eliana
Lucy
Marcella Acuña Báez
Suzanne
Sophia Hernandez
Opposing Girl
Katherine Klosterman
Woman Swimmer
Toussaint Merionne
Taxi Driver
Tisola Logan
Anna
Orpha Salimata
Mia
Erica Cho
Naomi
Marina Vasarhelyi-Chin
St. Maarten Kid #1
James Vasarhelyi-Chin
St. Maarten Kid #2
Nadia Lorencz
Nadia
Marcus Young
Diver
Karly Rothenberg
Dee Brady
Grace Subervi
Medic
Stephen Schnetzer
Commentator
Elizabeth Chahin
Reporter
Garland Scott
Jon Rose
Iván Oleaga
Trainer
Jose Mota Prestol
Fisherman James
Melissa R. Stubbs
Female Cop
Mauricio Adrian
Paramedic (uncredited)
Samantha Gordon
Katie (Register Girl) (uncredited)
Lilo Grunwald
Nina (uncredited)
Diana Nyad
Self (archive footage)
Bonnie Stoll
Self (archive footage)
John F. Kennedy
Self (archive footage)
John Bartlett
Self (archive footage)
Ellen DeGeneres
Self (archive footage)
Dee Brady
Self (archive footage)
Kate McKinnon
Self (archive footage)