When is the next race?

The next 12 Hours of Sebring is March 13-17 2019.

The fara 500 I think..but usually something at the track most weekends

If you're asking when the next race at this track is, it's July 7-8, FARA 500. If it's about the 12 hours, next year about this time.

The 12hr race is once a year. There seems to be activity at the track on a regular basis.

Next year

But always have racing at the track most weekends

Next March, 3rd week in March.