Foam Rolling the IT Band

If you experience pain when running (especially on hard surfaces) in and around your knee, it could be coming from your IT band. 

The IT band originates at the pelvis and runs down the side of your thigh, inserting into your shin bone. As well as stretching and strengthening the hip muscles, try foam rolling the IT band and you should begin to notice a decrease in your symptoms. 

Start by lying on your side, support your body weight with your legs and arms, and place the foam roller under the upper part of the IT band. Use your legs and arms to roll the length of the IT band along the roller, traveling to just above your knee. Continue back and forth for 60 seconds.
It will be uncomfortable at first, but the more you do it, the more pressure you can apply and the longer you can roll for.