For those who did not know (I was one of them) iTunes has a free Podcast called Marathon Training Academy that you can download for free. There are 25 episodes total. I have started downloading them in anticipation for a marathon this year- one of my goals for 2011.
Podcast description:
"Unlock your potential to become one of the healthy goal-oriented people who have completed a marathon. Listen as Angie shares her knowledge and experience as both a marathoner and registered nurse to help you run smarter, feel better, and go the distance. Whether you are a new runner or have logged many miles, Marathon Training Academy will propel you to the next level."