Add me to the hills over flats crowd. I'm built to go up hill and over all get more beat up on long flats than i do on lots of up and down. Though the "kings of glide" in my group like to show off their coasting skills on the downhills while i'm pedaling in my 50-x whatever.

I think if you do the same route and hills over and over they can either get easier or faster depending on how you attack it. You figure out what gear you will want to just sit and spin or shift up a few and get after it standing if it's short enough. Mixing it up between sitting and standing can help use different muscles

practice.. try different techniques..