SAN DIEGO, CA – JUNE 03: Participants run along 6th Avenue near Balboa Park in the 15th annual Rock ‘n’ Roll Marathon on June 3, 2012 in San Diego, California. (Photo by Kent C. Horner/Getty Images)
SAN DIEGO, CA – JUNE 03: Participants run along 6th Avenue near Balboa Park in the 15th annual Rock ‘n’ Roll Marathon on June 3, 2012 in San Diego, California. (Photo by Kent C. Horner/Getty Images)