There are
1,652 mi
from Sioux Falls, SD to Monrovia, CA
That's the driving distance. It would take 1 day 4 hours to go from Sioux Falls, South Dakota to Monrovia, California.
The flight distance (direct flight from Sioux Falls, SD to Monrovia, CA) is 1,312.09 mi.
1,652 mi = 1.61 kms