In Golden Gate Park. On South side of the park, straight in from 7th Avenue. Where the 2 baseball fields are. Go to the top of the hill. Park on the side street right after you pass the baseball field on your right.
Field is directly up the hill from the baseball field.
Parking sucks so take public transportation or bike if you can. Bay Bridge - East 580 South toward Oakland Grand Ave. Palo Alto from 280 exit sandhill right on Santa Cruz left on Junipero Serra left on Campus Dr. West right on Santa Teresa St. In Golden Gate Park near the North East corner. Parking is available in a lot off of Bowling Green Drive in the park.