There are
1,658 mi
from Walnut Creek, CA to Gainesville, TX
That's the driving distance. It would take 1 day 5 hours to go from Walnut Creek, California to Gainesville, Texas.
The flight distance (direct flight from Walnut Creek, CA to Gainesville, TX) is 1,424.15 mi.
1,658 mi = 2,668.80 kms