There are
2,983 mi
from Walnut Creek, CA to New Britain, CT
That's the driving distance. It would take 2 days 4 hours to go from Walnut Creek, California to New Britain, Connecticut.
The flight distance (direct flight from Walnut Creek, CA to New Britain, CT) is 2,594.01 mi.
2,983 mi = 4,800.36 kms