Horizon: An American Saga - Chapter 1 (or 2) is set during the American Civil War and follows Costner's character, Hayes, as the west expands.
Horizon: An American Saga has a reported runtime, which is good news for Yellowstone season 5, part 2 fans who were dismayed by Costner's departure.
Deadline reports that Kevin Costner's epic Western Horizon runs three hours. This three-hour runtime likely refers to Chapter 1 of the two-part film.
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