UPDATE 5:13 p.m.: Kinesiology Professor Steven Loy is safe. Loy sent an email to staff members of the kinesiology department stating that he and his daughter, who also ran the marathon, and his family...

Exploring all the angles, social media tells the story of this year's sold out LA Marathon through the perspective of racers, volunteers, celebrities and spectators. [View the story "2013 L. A. Marathon"...