I went with the Days Inn @ 5500 Williamsburg Rd, Sandston VA - (804) 222-2041. $53.99 a night, 5.11 mile from track, total time 9 minutes.
http://www.daysinn.com/DaysInn/contr...false&tab=tab2
There may be something closer but I had two options that were pet friendly and this one won out.