There are
2,723 mi
from Roanoke, VA to Union City, CA
That's the driving distance. It would take 1 day 23 hours to go from Roanoke, Virginia to Union City, California.
The flight distance (direct flight from Roanoke, VA to Union City, CA) is 2,290.37 mi.
2,723 mi = 4,381.59 kms