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

Carolyn McCormick

Elise

Johnny Solo

Aris

Anna Harriette Pittman

Diana, Age 14

Katherine Klosterman

Woman Swimmer

Toussaint Merionne

Taxi Driver

Erica Cho

Naomi

Nadia Lorencz

Nadia

Marcus Young

Diver

Karly Rothenberg

Dee Brady

Grace Subervi

Medic

Stephen Schnetzer

Commentator

Elizabeth Chahin

Reporter

Garland Scott

Jon Rose

Jose Mota Prestol

Fisherman James

Melissa R. Stubbs

Female Cop

Samantha Gordon

Katie (Register Girl) (uncredited)

Lilo Grunwald

Nina (uncredited)