There are
2,773 mi
from Walnut Creek, CA to Ithaca, NY
That's the driving distance. It would take 2 days to go from Walnut Creek, California to Ithaca, New York.
The flight distance (direct flight from Walnut Creek, CA to Ithaca, NY) is 2,396.70 mi.
2,773 mi = 4,463.47 kms