The range borders the Costa Rican Central Valley to the south.

This mountain range lies in various cantons: Escazú, Santa Ana, Mora, Acosta, Aserrí and Alajuelita.

Quitirrisí, located in these hills, is the Native American reserve which lies closest to the capital.

Due to its position, this mountain range has several climatic influences that are reflected in the habitat diversity and biodiversity.

It is a popular destination for mountain bikers and hikers although there are no clearly marked trails.