I could be wrong but I don't think the one in Drums is still open for racing. I was just looking at their thread on here and it seems like nobody can get a definite answer yes or no if theyre still open.
There is also LCRC... Not really all THAT close to Schuylkill county but still worth the drive. I don't know what classes you plan on racing but there is also Bumps and Jumps indoor 1/10 scare track below harrisburg that runs short course and 1/10 scale buggies.