12 miles
Rochester, CA is a halfway point between LA and Victorville.
halfway points
The halfway point between Kingman, AZ and Sacramento, CA falls in or around Keene, CA.
30 miles taking I-80.
122 mi (about 2 hours 19 mins)
Assuming you take U.S. Higway 101, Greenfield, CA is halfway between Paso Robles, CA and Hollister CA?
Stuart, CA.
Kettleman City, CA
The halfway point between Apple Valley, CA and Surprise AZ, falls in Blythe, California.
From San Jose, CA to Napa, CA is about 2-1/2 hours. Vallejo is enroute, so this should help.
North Natomas