Miles between Longmont, CO and Monrovia, CA

There are
1,025 mi
from Longmont, CO to Monrovia, CA

That's the driving distance. It would take 18 hours 1 min to go from Longmont, Colorado to Monrovia, California.

The flight distance (direct flight from Longmont, CO to Monrovia, CA) is 822.04 mi.

1,025 mi = 1.61 kms