Directed by Jean-Marc Vallee, the cast also includes Reese Witherspoon, Michiel Huisman, W. Earl Brown, Gaby Hoffmann and Kevin Rankin.
The film is being adapted by Nick Hornby from Cheryl Strayed's best-selling memoir about a woman (Witherspoon) who, after the end of her marriage and death of her mother, decides to hike the Pacific Crest Trail by herself.
Sadoski's stage credits include Reckless, reasons to be pretty, The House of Blue Leaves and Other Desert Cities.
His TV work includes "The Newsroom," "Ugly Betty" and "Law & Order: Special Victims Unit."