There are
1,047 mi
from Loveland, CO to Monrovia, CA
That's the driving distance. It would take 18 hours 19 mins to go from Loveland, Colorado to Monrovia, California.
The flight distance (direct flight from Loveland, CO to Monrovia, CA) is 830.49 mi.
1,047 mi = 1,684.29 kms