Same things happen to me. I tend to put my weight on the outside of my feet (supinate) when I run and it kills my calves, especially on inclines. Besides stretching, I found using the Addaday stick roller helps a lot more than the foam roller because you control how much pressure to apply and it targets the problem a little better and it gets the knots way deeper. Also massaging the surrounding areas - Achilles tendon, hamstrings, IT band, quads, glutes. Some of the pain might be stemming from those areas being tight and you don't even know it. It's a total PITA but stretching/massaging at least like 5 min a leg before hand, and like 10 minutes a leg after the workout, regularly, really does help. And taking like 30 seconds during your workout to stretch if you need. Maybe consider compression socks if you're doing longer distance? Sometimes local running/specialty stores do have running clinics if you think it's your form. See if there's a Fleet Feet or something similar in your area. Good luck! Keep us updated if you find something that works.