There are
2,858 mi
from Walnut Creek, CA to Yeadon, PA
That's the driving distance. It would take 2 days 2 hours to go from Walnut Creek, California to Yeadon, Pennsylvania.
The flight distance (direct flight from Walnut Creek, CA to Yeadon, PA) is 2,491.10 mi.
2,858 mi = 4,599.70 kms