The fifth season of The Hills, an American reality television series, consists of 20 episodes and was broadcast on MTV. Part I was aired from April 6, 2009, until May 31, 2009, while Part II was aired from September 29, 2009, until December 1, 2009. The season was filmed primarily in Los Angeles, California, with additional footage in Crested Butte, Colorado, Oahu, Hawaii, and Las Vegas, Nevada. Part I was filmed from December 2008 to April 2009, while Part II was filmed from May to November 2009. The executive producer was Liz Gateley.