Here are some articles I've found informative/interesting regarding the race:
Facts and Figures:
2013 Nationwide Children’s Hospital Columbus Marathon Breaks Records
COLUMBUS MARATHON BLOG (Official)
Race Recaps from 2013:
The Nationwide Columbus Marathon (in Review)
2013 Columbus Marathon Recap
I am a marathoner! - 2013 Columbus Marathon recap
Race Recap: Columbus Marathon (Half Review)
Nationwide Children's Hospital Columbus Marathon 2013 - Video recap!
Race Recap: Nationwide Children’s Hospital Columbus Half Marathon (Half Review)
I know I'm pumped (and informed) after reading these!