Chattsworth,New Jersey

Good track. Can be crowded, but this shouldn't be a problem in February (I didn't know they were open in February). Very expensive.

You better check their web site or call before you go the tracks were closed due to flooding. The trails were open (two small loops) but the guys I talked to that work at the park advised against riding them. They said the ground was still frozen and hadn't been groomed in a while. That was Wed night 2/4 things may have changed since then.
Yeah it is expensive if you are just going for one day, again check the web site or call for details.