It will probably not work for your GPS/phone if you use it, but the official address for Joseph D. Grant County Park is:
18405 Mt. Hamilton Rd.
San Jose, CA 95140
WARNING: THE ABOVE ADDRESS MAY PUT YOU 4-5 MILES AWAY FROM THE ACTUAL PARK ENTRACE --DON'T PUNCH IT INTO YOUR GPS/PHONE AND EXPECT TO GET TO THE RACE!
We recommend you use the below map to get yourself accurate directions. You can click on the "more options" link below and punch in your starting address to get there. Alternatively, some people will just punch in the intersection of Quimby Road and Mount Hamilton Road (the park entrance is just east of that intersection on Mount Hamilton Road).
Again, we strongly recommend you consult a map before driving and avoid Quimby Road. Most GPS and cell phone directions will take you up Quimby. Our preferred route is to come up Alum Rock Ave and then take Mount Hamilton Road to the park entrance.
There will be no parking fees for registered runners.