There are
2,025 mi
from Simi Valley, CA to Mchenry, IL
That's the driving distance. It would take 1 day 12 hours to go from Simi Valley, California to Mchenry, Illinois.
The flight distance (direct flight from Simi Valley, CA to Mchenry, IL) is 1,734.85 mi.
2,025 mi = 3.22 kms