Directions to the start.  From Highway 101, take the East Blithedale/Tiburon Blvd. exit.  Upon exiting the freeway, head west and follow East Blithedale for 1.8 miles.  You will go through several traffic lights and will eventually come to a stop sign.  At the stop sign, turn left onto Throckmorton Avenue and follow it for 0.4 miles to the intersection of Cascade Way.  Old Mill Park is on your left.

For more explicit directions, enter 324 Throckmorton Avenue, Mill Valley, CA in your smart phone as your destination.