The 42nd Telluride Film Festival took place on September 4–7, 2015, in Telluride, Colorado, United States. Writer Rachel Kushner was appointed as the year's guest director. Telluride honored Rooney Mara, Danny Boyle, and Adam Curtis as the awardees of the Silver Medallion. Participant Media received the Special Medallion award. The festival line-up was announced on September 3, 2015.