There are
2,340 mi
from Walnut Creek, CA to Trotwood, OH
That's the driving distance. It would take 1 day 16 hours to go from Walnut Creek, California to Trotwood, Ohio.
The flight distance (direct flight from Walnut Creek, CA to Trotwood, OH) is 2,020.58 mi.
2,340 mi = 3,766.40 kms