I find my sorest areas are like yours under my scars at the great trochanter. I am still weak with the abductors on the left. Every time in the gym I lie down on one side and lift the extended leg up in the air, locking the knee. The left is still sore and weaker.
Some runs are followed by soreness, and some aren’t. Pretty random really. The best is to take time and rest between runs and restart when things are comfortable. It’s snakes and ladders really, 2 step forwards, one step back.