Next to Las Trampas on Bollinger Canyon Road is 100-acre Little Hills Ranch, a picnic park available for groups by reservation only.
Little Hills offers eight group picnic sites or reservation of the entire park. Activities include basketball, softball, tether-ball, foosball, volleyball, ping pong, horseshoes, rock climbing, swimming, kayak races, trout fishing, spin art, face paint, and live featured performers. To make a picnic reservation, call The California Parks Company at (925) 837-8158.
Little Hills has disabled parking spaces, wheelchair accessible picnic tables and restrooms.
From I-580 in Castro Valley, take Crow Canyon Road north to Bollinger Canyon Road. Turn left (north) onto Bollinger Canyon Road and follow it into the park. From I-680 in San Ramon, take Crow Canyon Road west to Bollinger Canyon Road, turn right (north) and follow it into the park.