Airing of the fifth season was divided into two sections, Part I under Conrad's lead, and Part II after Cavallari was confirmed to join the series. Part I premiered on April 6, 2009 in the same timeslot, and concluded after ten episodes on May 31, 2009. Part II premiered on September 29, 2009 and continued to air on Tuesday evenings. The season aired a total of twenty episodes, split into two equal halves, before finishing on December 1, 2009. The sixth season also aired on Tuesdays and premiered on April 27, 2010. Twelve episodes later, the series ended its run after a total of 102 episodes on July 13, 2010. In July 2012, MTV aired a month-long morning marathon of "The Hills", titled "Retro Mania". The following year, the marathon was renamed "RetroMTV Brunch", and culminated with the airing of an alternate series finale on August 9, 2013. On August 13, 2016, reruns started to air on MTV's new sister channel MTV Classic. As of December 30, 2016, the series has been removed from the schedule.