Jim Ryun's Training Leading Up to 3:51.1

As the summer of 1967 was one of Jim Ryun's finest (World Records in the mile and 1500m), we are sharing some snippets from his training journal. These are from the weeks and days leading up to his World Record in the mile of 3:51.1 on June 23, 1967. We will post the week before his 3:33.1 1500m record next week!