I completed my first half marathon a few weeks ago and am training for my next one at the end of October! I loved it and finished in 2:19 which I was perfectly pleased with. Around miles 9-11 I was thinking I felt so excellent that maybe I would consider training for a full marathon at some point...by the end I was sure I never would. :) That said I went right home and signed up for another. I think I'm a cool weather, down a canyon type of runner. And again, I'm perfectly pleased with that.