Well i'm a pretty big dude at 6'6 and 275lbs (down from around 330). The hills are getting easier, either from losing weight or gaining strength. Maybe both. That being said, there are still a few spots that kick my a$$ every time! I hate having to walk up a hill, but if they are more than about 8% for any amount of distance, i run out of gas in a hurry. Anyways, I try to avoid particularly steep hills, but there is one short hill on an otherwise great ride that I've yet to make it up without walking. It's the only hill i've had to walk up, and I always think anyone who see's me is laughing like a madman at how stupid I look pushing my bike up a hill. Anyways, today I was just getting done swallowing my pride (in other words I finished walking up the hill) and was just about to hop back in the saddle when some skinny little dude on a bike with about 100 lbs of saddle bags strapped to it goes riding by. He's not even breathing hard. And here I was starting to think I was getting better at this hill climbing thing.