Patrick J. Adams
as Maj. John Glenn
Jake McDorman
as Lt. Comm. Alan Shepard
Colin O'Donoghue
as Lt. Gordon Cooper
Aaron Staton
as Wally Schirra
James Lafferty
as Scott Carpenter
Micah Stock
as Deke Slayton
Michael Trotter
as Gus Grissom
Nora Zehetner
as Annie Glenn
Eloise Mumford
as Trudy Cooper
Shannon Lucio
as Louise Shepard
Patrick Fischler
as Bob Gilruth
Eric Ladin
as Chris Kraft
Jackson Pace
as Glynn Lunney
Josh Cooke
as Loudon Wainwright
Kaley Ronayne
as Dee O'Hara