There are
2,811 mi
from Lakeland, FL to Walnut Creek, CA
That's the driving distance. It would take 2 days 2 hours to go from Lakeland, Florida to Walnut Creek, California.
The flight distance (direct flight from Lakeland, FL to Walnut Creek, CA) is 2,402.85 mi.
2,811 mi = 3.22 kms