I wear these for running in place of shorts and they are great. I have put wearing shorts on pause because due to expansion of the inner thigh area Ms. Tina Fey would refer to as my "crotch biscuits", there is a wee bit of uncomfortable chafing.

Be warned, these leggings run really small. Despite the crotch biscuit issue, I'm pretty tiny and have small hips (5'5ish and 110lbs). I got a medium and they are snug/I can see a panty line if I look closely.