Miles between San Marcos, CA and Monrovia, CA

There are
102 mi
from San Marcos, CA to Monrovia, CA

That's the driving distance. It would take 2 hours 1 min to go from San Marcos, California to Monrovia, California.

The flight distance (direct flight from San Marcos, CA to Monrovia, CA) is 84.23 mi.

102 mi = 163.75 kms