One of the most grueling and unusual endurance running races ended this weekend with a record finish. The Barkley Marathons in Tennessee is so challenging, frequently no one finishes the roughly 100-mile race. (It might be longer — it depends upon whom you ask.) This year, five people did — including three international runners, and the first women ever, Jasmin Paris of the UK. Hosts Marco Werman and Carolyn Beeler have more.