Sonoma-Marin Fairgrounds and Event Center Share: events Sonoma-Marin Fairgrounds and Event Center Visit Website Request Info 175 Fairgrounds Dr. Petaluma, CA 94952 (707) 283-3247 About Us Ag, Events, Entertainment About Media Map About Ag, Events, Entertainment Media What's Nearby? Distance: 5 10 15 20 25 50 mi.