I run in capri length tights all year. I have thinner, ventilated ones for summer that worked well, so that might be something to consider. I happen to have narrow hips and big legs, so any fabric between my thighs will always rub unless it's at least 5" in length and tight to my legs. I have a couple of skirts from www.runningskirts.com that used to work well enough when I was not in the mood for capris, too. These had the short liner underneath that was long enough to protect against rub and they had little pockets in the skirt. I will say, that I never wore them for runs longer than a hour though. Chafing is too big of a problem for me. I see all those runner types in those flowy, super short, shorts and it just screams pain to me. Of course, most of those people have thighs that don't touch when they run, so I can see how they'd work great for them. They would certainly be nice and cool!