Caloocan is 2.3 times larger than Marikina.
Area: 53 km2 calculated
Caloocan is one of the cities that comprise Metro Manila, the National Capital Region of the Philippines. Located north to northeast of Manila, Caloocan is the country's third most populous city with a population of 1,489,040 as of the 2010 census. Wikipedia
Area: 23 km2 calculated
Marikina, officially the City of Marikina, located in the island of Luzon in the Philippines, is one of the cities that make up Metro Manila, the National Capital Region. Wikipedia