Main Cast:
* Michael Sarrazin as "Jack"
* Jacqueline Bisset as "Molly"
* Donald Pleasence as "The Professor"
* Catherine Bach as "Carole"
* Art Carney as "The Gambler"
* Peter Fonda as "The Kid"
* Claude Akins as "The Sheriff"
* Brian Keith as "The Old Man"
Supporting Cast:
* John Mills as "Old English Gentleman"
* David Huddleston as "The Cowboy"
* Sylvester Stallone as "The Driver" (uncredited)
* Gary Busey as "The Mechanic" (uncredited)
While some of the actors are prominent, the film is known for having a star-studded ensemble cast with many notable actors appearing in smaller roles.