There are
2,891 mi
from Fairfax, VA to Watsonville, CA
That's the driving distance. It would take 2 days 2 hours to go from Fairfax, Virginia to Watsonville, California.
The flight distance (direct flight from Fairfax, VA to Watsonville, CA) is 2,403.85 mi.
2,891 mi = 4,652.52 kms