Side Leg Swings are a great dynamic exercise for warming up the hips before you start running.
Begin by standing about one metre away from a wall with both of your hands against the wall for support. Standing nice and tall, shoulders back and chest open, take one leg and bring it across your body, then swing the leg back out to the opposite side whilst keeping your hips neutral.
Swing your leg back and forth with good control. Engage the core and glute muscles and keep your pelvis tilted forwards.