Directions to the office from Sacramento:
Travel west on I-80, and exit Hwy 37 W towards San Rafael. Go past Hwy 121. At the next light at Lakeville Hwy, make a U-turn and head back on Hwy 37 east. Go past the weigh station and within 100 yards turn Right into the driveway. You will see a sign for Sonoma Land Trust and the San Pablo Bay National Wildlife Refuge.

Directions to the office from San Francisco:
Travel north on Hwy 101, and exit Hwy 37 East towards Vallejo. Pass Lakeville Highway and go past the weigh stationvand within 100 yards turn. Right into the driveway. You will see a sign for Sonoma Land Trust and the San Pablo Bay National Wildlife Refuge.

Coordinates to the office: N 38.140338 W 122.463694

The entrance to Lower Tubbs Island and the Tolay Creek Trail is located adjacent to Highway 37, approximately ½ mile east of the Highway 121/37 intersection in Sonoma County.