Archival footage from 1979, in which Bud Collins narrates a tour of the course.
Running wasn't always popular: We talk to the people who did it before it was cool.
Last year, 45 percent of Boston Marathon runners were women. 50 years ago, there was one.
Runners talk about training through winter and the fickle nature of spring.
Kathrine Switzer interviews her one-time nemesis, race official Jock Semple.
At Boston, everyday runners cross the same finish line as the best runners in the world.
A skeptical Kathrine Switzer interviews Rosie Ruiz in this archival footage.