There are
1,069 mi
from Pasco, WA to Simi Valley, CA
That's the driving distance. It would take 20 hours 9 mins to go from Pasco, Washington to Simi Valley, California.
The flight distance (direct flight from Pasco, WA to Simi Valley, CA) is 827.23 mi.
1,069 mi = 1,720.40 kms