This was my first marathon and I had the awesome opportunity through my work, City Sports to lead training runs with GoreTex and the Philadelphia Marathon. The course is pretty much flat with some gradual hills going to Manayunk and throughout Manayunk, (there were not killer hills). It gets a little bit boring on the way back to the finish on Kelly Drive but it is very flat. This marathon was ran very well and I enjoyed it as my first marathon!