Great for running if you conceal carry. I have a very tapered waist and It can be hard to find ways to conceal my firearm. As these short are technically compression shorts and not regular shorts, I would recommend wearing them underneath a pair of loose fitting shorts. There is a slight amount of bounce or tugging downward, just due to the firearm, and a heavier weapon may cause some issue, but my Ruger LCR is not too heavy. Furthermore, If you have a significant sized booty, carrying in the back is rather uncomfortable because of the dip from waist top butt. However, these shorts are reversible- which is wonderful, and front concealment works just fine. These shorts are form fitting enough that they could probably be worn under jeans or leggings without noticeable lines.