Add another lengthy film to your summer movie schedule. Deadline is reporting that Kevin Costner’s “Horizon: An American Saga — Part 1” is 3 hours long. Absolutely nobody should be surprised by the runtime. Costner is going for broke with this passion project, which he self-funded by, among other things, selling his 10-acre Oceanfront Santa Barbara property. He’s supposed to shoot parts 3 and 4 this summer in Southern Utah.