The Marin County Amateur Championship is an annual golf tournament held at San Geronimo Golf Course in Marin County. The tournament is a 36-hole stroke play event, which consists of two flights: Championship and Senior (50+). The Marin County Amateur Championship and the Senior Championship are eligible for the Northern California Golf Association Points Program.
The tournament committee's mission is to offer amateur golfers a championship experience of the highest level. The committee provides all contestants pin sheets, local rules, fruit and drinks on course and have several marshals and rules officials to assist contestants. Pace of play is a main focus point for the committee and players are grouped as 3-somes and sent off every 10 minutes to address this concern.