I actually googled this the other day when I was bored at work! According to google maps, Kernersville is (rough estimates)...
5 hours from Atlanta (Cheersport)
5 hours from DC (BATC and Champions League this year)
9 hours from Orlando (Summit, Worlds, and UCA (can't remember if they attend?))
8 hours from Indianapolis (The Majors, Jamfest Nationals)
And then, since Champions League moves around):
6 hours from Columbus, Baltimore
7 hours from Pittsburgh, Nashville, Cincinnati, Cleveland
8 hours from Philly, Louisville
9 from NYC
10 from Memphis (Probably pushing it at this point)
11 from Chicago and New Orleans
CEA has lots of options!