There are
1,502 mi
from Mckinney, TX to Simi Valley, CA
That's the driving distance. It would take 1 day 1 hour to go from Mckinney, Texas to Simi Valley, California.
The flight distance (direct flight from Mckinney, TX to Simi Valley, CA) is 1,271.89 mi.
1,502 mi = 1.61 kms