Miles between Billings, MT and Monrovia, CA

There are
1,223 mi
from Billings, MT to Monrovia, CA

That's the driving distance. It would take 21 hours 31 mins to go from Billings, Montana to Monrovia, California.

The flight distance (direct flight from Billings, MT to Monrovia, CA) is 947.05 mi.

1,223 mi = 1.61 kms