The Rugged Path was a difficult production, with Kanin later writing, "In the ten days prior to the New York opening, all the important relationships had deteriorated. Spencer was tense and unbending, could not, or would not, take direction". Tracy considered leaving the show before it even opened on Broadway, and lasted there just six weeks before announcing his intention to close the show. It closed on January 19, 1946, after 81 performances. Tracy later explained to a friend: "I couldn't say those goddamn lines over and over and over again every night ... At least every day is a new day for me in films ... But this thing—every day, every day, over and over again."
Kanin's 1946 play Born Yesterday, which he also directed, ran for 1,642 performances. Kanin worked, uncredited, on the screenplay of the 1950 film adaptation. His other stage work includes directing The Diary of Anne Frank (1955), which ran for 717 performances, and the musical Funny Girl (1964), which ran for 1,348 performances. Kanin wrote and directed his last play, Peccadillo, in 1985, the same year he was inducted into the American Theater Hall of Fame.