I think they are 5 dollars a run which isn't bad. My uncle is helping me train a lot and has been very motivating. He ran the marathon last year and is looking for a better time this year.
Where I live they have a series of 5 or 6 runs to help train for the marathon. The first is 5 miles and the last is 18 I think. I'm debating signing up for them or just sticking to my own routine.