San Francisco International (SFO) : Take 101 south san jose
CA 92 E
I-880 North
Take exit 31A to merge onto I-238 S
then take I-580 E
then I-580 E becames I-205 E merge in I-5 north then take exit 461 CA - 120 E toward manteca/sonora ...just stay on 120
Oakland International (OAK) : take 880 south to 580 east to 205 east then I-580 E becames I-205 E merge in I-5 north then take exit 461 CA - 120 E toward manteca/sonora ...just stay on 120 after 20 miles from manteca we are on left side of road