Chad, 2 tracks run 1/12. Willis Hobbies on Willis Ave in Mineola. They have a small track in the basement of the store. Racing season is over, but they run practice on Saturdays.
South Shore Hobbies in Coram (exit 63 on the LIE). Huge track, good racers. They race Friday nights, but there isn't a big 1/12 crowd in the summer. All touring car.
There are no "races" for 1/8 on the island, but there are 2 fun run places, Deer Park train station and Ronkonkoma train station. Nitro TC is more popular, but there are always a few 1/8.
1/8 racing the closest would be Edison NJ. If you go to the starting grid conference and go to the Region 1 boards you can gete more info. Their next race is May 22.
Oh, I forgot Floyd Bennett Field. I haven't raced there myself. I 've heard mixed stories about there.