When you run long, do you stay the same pace? Now that the weather is nicer, I've been able to go on some ten mile runs. I'm not running super fast---maybe about a 10 minute pace. I'm wondering if it would be a better workout if I were to switch up my pace, like, maybe run a mile at a fast pace and then maybe job slowly for two miles and repeat that a few times during the run. Is there anything to be gained by doing that? Or would I be better off trying to maintain the same pace for the whole time during my long runs (which I'll maybe do once or twice a week) and use my other runs for increasing medium-distance speed? I don't have any road races coming up soon, so I'm mostly just trying to increase my overall fitness rather than training my body to go a certain pace.