When does SpongeBob's Runaway Roadtrip return?

The eighth season of the American animated television series SpongeBob SquarePants originally aired on Nickelodeon in the United States from March 26, 2011, to November 23, 2012. The series chronicles the exploits and adventures of the title character and his various friends in the fictional underwater city of Bikini Bottom. The season's executive producers were series creator Stephen Hillenburg and writer Paul Tibbitt, who also acted as the series' showrunner. In 2011, SpongeBob's Runaway Roadtrip, an anthology series consisting of five episodes from the season, was launched.