Here's the numbers from Google:
Hollister to Coalinga: 96.9 miles
Coalinga to Parkfield (no gas): 28.8 miles
Parkfield to California Valley (no gas): 65.6 miles
California Valley to Taft (gas): 44.3 miles
So actually two major stetches between fillups, 96.9 miles
and 138.7 miles
I've got a Safari tank and can get around 210 miles per GPS odometer.
I'll fill up in Taft Friday and should be good for the ride back to Coalinga if
we hit Taft again and fill up Saturday afternoon.