Kirk Douglas as Sen. William J. Tadlock

Robert Mitchum as Dick Summers

Richard Widmark as Lije Evans

Lola Albright as Rebecca 'Becky' Evans

Jack Elam as Preacher Weatherby

Stubby Kaye as Sam Fairman

Michael McGreevey as Brownie Evans

Harry Carey, Jr. as Mr. McBee

Connie Sawyer as Mrs. McBee

Michael Witney as Johnnie Mack

William Lundigan as Michael Moynihan

Elisabeth Fraser as Mrs. Fairman

John Mitchum as Little Henry

Patric Knowles as Captain Grant

Hal Lynch as Big Henry

Timothy Scott as Middle Henry

Roy Glenn as Saunders

Paul Lukather as Mr. Turley

Stefan Arngrim as William J. Tadlock Jr.

Roy Barcroft as Mr. Masters

Eve McVeagh as Mrs. Masters

Peggy Stewart as Mrs. Turley

Anne Barton as Mrs. Moynihan

Nick Cravat as Calvelli

Michael Keep as Indian Brave

Mike Lane as Sioux Chief (as Michael Lane)

Sally Field as Mercy McBee

Katherine Justice as Amanda Mack

Paul Wexler as Barber (uncredited)

Jack Coffer as Cattleman (uncredited)

Everett Creach as Cattleman (uncredited)

Sam Elliott as Missouri Townsman (uncredited)

Clarke Gordon as Caleb Greenwood (uncredited)

Hollis Hill as Bagpiper at Fort Hall (uncredited)

Eddie Little Sky as Sioux Warrior (uncredited)

Gary Morris as Paw-Kee Mah (uncredited)

Mitchell Schollars as Indian Boy (uncredited)

Hector Smith as Bagpiper at Fort Hall (uncredited)

Rex Trailer as Cowboy Asking About Bethel Bartholomew (uncredited)