There are
2,785 mi
from Redwood City, CA to Carlisle, PA
That's the driving distance. It would take 2 days to go from Redwood City, California to Carlisle, Pennsylvania.
The flight distance (direct flight from Redwood City, CA to Carlisle, PA) is 2,405.08 mi.
2,785 mi = 4,481.98 kms