There are
1,510 mi
from Walnut Creek, CA to Sweetwater, TX
That's the driving distance. It would take 1 day 2 hours to go from Walnut Creek, California to Sweetwater, Texas.
The flight distance (direct flight from Walnut Creek, CA to Sweetwater, TX) is 1,275.95 mi.
1,510 mi = 2,430.88 kms