There are
2,898 mi
from Redwood City, CA to Lansdowne, PA
That's the driving distance. It would take 2 days 2 hours to go from Redwood City, California to Lansdowne, Pennsylvania.
The flight distance (direct flight from Redwood City, CA to Lansdowne, PA) is 2,508.37 mi.
2,898 mi = 4,664.00 kms