Well, it looks like it's a 2 day event, from the schedule:
http://www.sfrscca.org/images/2015/Cale ... lsched.pdf
Registration is open on
https://www.motorsportreg.com/events/sc ... OwKUfnF-So
http://www.sfrscca.org/images/2015/Cale ... lsched.pdf
Registration is open on
https://www.motorsportreg.com/events/sc ... OwKUfnF-So