There are
2,725 mi
from Roanoke, VA to Redwood City, CA
That's the driving distance. It would take 2 days to go from Roanoke, Virginia to Redwood City, California.
The flight distance (direct flight from Roanoke, VA to Redwood City, CA) is 2,302.15 mi.
2,725 mi = 3.22 kms