Hi all. My mom was just diagnosed with brain cancer, and I really want to do the Livestrong Challenge in her honor. I'm in upstate NY so it would have to be Philly for me. I would like to do the century, but it would be my first (I've done several MS150's and some 75-mile one-days, but never a full century in one day), and I've heard the Philly route is pretty challenging. How challenging is challenging, and just how bad are those hills?