This year marks the fortieth anniversary since Bruce Jenner won the gold medal in the 1976 Summer Olympic games in Montreal. To commemorate the achievement, Caitlyn Jenner gave Sports Illustrated exclusive access to senior writer Tim Layden for a documentary and cover story which will debut tomorrow morning.

SI spent most of the time with Jenner at her Malibu, California home as well as the University of Oregon track where she qualified for the Olympic games. Expect to see more profiles on Jenner as we get closer to the start of the 2016 Summer Olympic Games next month in Rio.