I was searching around and came across this site, thought you guys might find it useful. A directory of all the racetracks/dragways in the United States. Page was last updated on April 27 of this year so the list is pretty current:

http://www.gearheadracing.com/Refere...kDirectory.htm

Site lists the name, city, phone number, website (if applicable), and what they have (1/4, 1/8, oval, etc)