Here are the dates of the iRacing tracks you need to have them by. They are broken down into groups of three to help with discounts when purchasing.
06/06/14
ATLANTA , MICHIGAN, DAYTONA
07/18/14
DARLINGTON, RICHMOND, DOVER
08/29/14
INDIANAPOLIS, LAS VEGAS, NEW HAMPSHIRE
10/10/14
MARTINSVILLE, CHICAGOLAND, PHOENIX(new one)
01/31/15
BRISTOL, AUTO CLUB, TEXAS
03/14/15
TALLADEGA, KANSAS, ROCKINGHAM
04/25/15
IOWA, GATEWAY, POCONO
06/06/15
KENTUCKY, SONOMA, WATKINS GLEN
07/18/15
HOMESTEAD, MID OHIO, CANADIAN TIRE
Optional Tracks
IRWINDALE