Once a Runner will officially be released in the 2nd quarter of next year, and runners have been waiting for years for the book to be printed again. For a (very) limited time you can get an early copy of the book at the Maine Running Company, as a case of the books has arrived in stock.
If you want to pick up a copy, I recommend that you don’t wait to get over there and buy one. I don’t expect them to last very long.
Patrick Mouser created a series of trailers for the film version of Once a Runner as a design project, but unfortunately they aren’t based on a real film. As John Parker said when he spoke at the Maine Running Company last year, the easiest money he ever made was selling the film rights to the movie every time they expired because nobody ever got around to making it: