There are
2,839 mi
from Redwood City, CA to Ephrata, PA
That's the driving distance. It would take 2 days 1 hour to go from Redwood City, California to Ephrata, Pennsylvania.
The flight distance (direct flight from Redwood City, CA to Ephrata, PA) is 2,458.08 mi.
2,839 mi = 4,568.22 kms