In reply to Sam W:
Many friends have done this. I don't see the appeal. Long journeys I do. I'd much rather try to do say the Long Trail through VT or something. Saying that I often follow it but likewise Barkeley marathons holds no real appeal.
I know Maggie pretty well as we lived near each other so have raced together, drunk beers together, running shop talks and that sort of thing. It's incredible to see how strong she is, she reminds me of Nicky Spinks as she's just not that good a runner but just plows on regardless and holds her pace. I think she's been top 10 at Western. 4th at 24 hr World Champs certainly a strong running pedigree but it's on the super long she excels.
There's also a ski version where they ski up and ski down laps on a mountain. They just held that in NH.