<http://schema.org/description>
"The fall season is a popular time of year for many to train and run marathons\u2014premiere events such as the New York City Marathon, Marine Corps Marathon and Philadelphia Marathon will take place over the next several months. Because of the large amount of training mileage required to compete, runners are susceptible to injury. Those new to the sport who are participating in their first marathon are especially vulnerable to injury. Training errors are the most common cause of running injuries. Risk for overuse injuries can be reduced if runners follow some simple training guidelines. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2012-10-runners-injury-common.html>