I'm not PT, but I've been quite a bit and often find myself reading up on injuries and trying to learn more.
Often, but not always, a sore region is due to weakness in that area or a nearby area. So my recommendation is strength work around that whole region. The caveat being, it should not hurt! If it hurts while you work on the exercises, you'll probably need to go see a pro.
Lunges. Check out the Lunge Matrix video on youtube. You can do it before every run.
Band work. Get one of those big bands, put it around your ankles, and do side steps back and forth. Do forward marches where you step forward and out with the right, then take the left foot and bring it parallel to the right. Take the left and step forward and out (roughly at a 45 degree angle). Bring the right up along. Go forward for however long your stretch is, then do the same step backwards. Finally, spread your legs apart to get good resistance on the band (for this is a little wider than shoulder width) and march forward while keeping your feet wide apart. Your forward steps might only be 6 to 10 inches. That's great, more steps. Go forward until you run out of room, then do the same step process going backwards.
Do these 2-3 times a week. You'll find your glute medius and whole hip region get nicely worked. Repeat it for a month and you'll be surprised how much stronger and straighter everything in that region feels.