Bella Thorne as Katie Price

Patrick Schwarzenegger as Charlie Reed

Rob Riggle as Jack Price

Quinn Shephard as Morgan

Ken Tremblett as Mark Reed

Suleka Mathew as Dr. Paula Fleming

Jenn Griffin as Barb Reed

Nicholas Coombe as Garver

Tiera Skovbye as Zoe Carmichael

Norm Misura as Fred / Night Clerk

Austin Anozie as Owen

Alex Pangburn as Wes

Guy Christie as Swim Coach

Paul McGillion as Blake Jones

Donny Lucas as Engineer

Jerome Yoo as Geeky Friend #1

Kenneth Tynan as Geeky Friend #2

Ava Dewhurst as 7-Year-Old Katie

Audrey Smallman as 7-Year-Old Morgan

Jaeda Lily Miller as 7-Year-Old Zoe Carmichael

Ray Boulay as Swim Scout

Nick Watson as Guitarist

Michelle Choi-Lee as Nurse

Jacqueline King as Jessica Rollins

Allyson Grant as Theresa Price

Darla Pitkanen as Zoe's Friend #1

Dean Petriw as Tommy / Young Boy

Kris Neufeld as Ice Cream Customer

Farris Tyab as Man

Kiarra Hamagami Goldberg as Patient

Chris Sheilds as Principal

Kiefer O'Reilly as Young Charlie (uncredited)

Jeff Reyes as Swim Team Member (uncredited)

Tom Vanderkam as Band - Lead Vocalist (uncredited)

Yobdee Marazzi as Zoe's Friend (uncredited)