Orthopedic section at about.com that focuses on running injuries: Cover many common areas of running injuries including, Hip & Thigh Injuries, Knee Injuries, Leg  Injuries, Ankle Injuries, Foot Injuries, Avoiding Injuries and more.

Sports injury clinic: This site is focuses on preventing running injuries by covering   topics such as Shoe Selection, Warm Up, Cool Down, Sports Massage, Nutrition and Hydration, training. It also has pages on treating a variety of ailments that runners might come up against.

The Running Doctor: This is a site from Dr. Keith Jeffers who is a Chiropractor and a serious runner himself. He has run the Boston Marathon in 2:38. He has worked with some of the top runners such as Steve Scott and Ron Tabb.

Sports Injury Buletin: This site has interesting statistics on different running injuries. It has a vast selection of articles to choose from dealing with a variety of running maladies.

Runners Resuce: Nice injury treatment and prevention site. The sites starts off with the following sentence that explains the sites objective, "This site is for the thousands of runners, joggers, and walkers who are not concerned with how fast they can finish  a race but who want to run without injury"