All soccer tournaments are sanctioned by either CYSA or US Club Soccer, and you can find listings for tournaments at all levels of soccer at the following websites:
CYSA Sanctioned Tournaments in Northern California are listed at the main CYSA website. You will also find instructions how to submit your request to participate in each event. You will find a range of Class 4, Class 3 and Class 1 tournaments sanctioned by CYSA. Participation by teams requires a CYSA player pass and golden rod roster.
US Club Soccer Sanctioned Tournaments in Northern California are listed at the US Club Soccer website. You will find a range of Class 1 tournaments sanctioned by US Club Soccer. Participation by teams requires US Club Soccer player pass. A more complete list of US Club sanctioned tournaments across the US is listed at GotSoccer.com