The Pasadena Freeway is a shorter freeway by LA standards. The Pasadena Freeway provides a quick route between the Pasadena area and downtown Los Angeles.

The Pasadena Freeway travels directly past the downtown Los Angeles area... as the Pasadena Freeway travels past downtown Los Angeles, the Freeway shortly thereafter reaches the i-10 (Interstate 10).

Once the Pasadena Freeway crosses the i-10 and starts traveling south past the i-10, the name of the Pasadena Freeway changes to the "Harbor Freeway" or i-110 (Interstate 110), which travels south, eventually reaching the San Pedro / Los Angeles Harbor area. 

The Pasadena Freeway is also known as "Highway 110, SR 110" and the "Arroyo Seco Parkway"... the length of the Pasadena Freeway is approx. 11.7 miles in long.