There are
2,666 mi
from Simi Valley, CA to Manassas Park, VA
That's the driving distance. It would take 1 day 23 hours to go from Simi Valley, California to Manassas Park, Virginia.
The flight distance (direct flight from Simi Valley, CA to Manassas Park, VA) is 2,295.23 mi.
2,666 mi = 3.22 kms