I use this mostly when we go to a store and I want to have both of my hands free.  Or I use it in the house if for some reason, I want her to stay with me.  I find it easier to just carry the leash for our walks, but I suppose if I worked with her and taught her to use it for a jog it would be good.  We just haven't spent the time to do that.  I also used it when we went camping so that I could keep her by my side.  It's a decent product and is nice for hands free leading.  I would probably buy this again.