As a competative runner and physio student I have good understanding of this condition. I suffered with it on and off for years myself and physios rarely helped. Of all the various treatments, what worked for me was;

transverse frictions just proximal to the painful area.
Full sports massage to ant/post thigh and deep massage, including trigger points using elbows to gluteals (particularly glut med and piriformis)
IT stretches
Strengthening of glut med and quadratus lumborum (hip hitching)
Stengthening of quads to prevent pallellar medial deviation on affected leg.
Stregthening of leg to provide stability for excessive mobility in subtalar joint
Orthotic devices to correct leg length discrepancy, and fallen arch.

never running on a cambered road and alternate the direction you run a loop
increase milage very slowly
ice if painful