Registration closed April 30, 2018 4:25 PM at 2018-04-30T16:25:00-0700 Registration ends April 30, 2018 4:25 PM at 2018-04-30T16:25:00-0700 Registration opens January 8, 2018 12:00 AM at 2018-01-08T00:00:00-0800 Registration runs from January 8, 2018 12:00 AM to April 30, 2018 4:25 PM
Sonoma Raceway has sound maximum requirements. The event day is a 103db day. Please be prepared. There are no refunds or credits if your car fails to meet the venue's requirements.