The Amazing Race 19 will be the upcoming nineteenth installment of the reality television show The Amazing Race. The Amazing Race 19 will feature several teams of two, each with a pre-existing relationship, in a race around the world. CBS confirmed that at least one Race cycle, including this 19th one, will air along with Undercover Boss on Sunday nights in the 2011-2012 television season. The 19th season will premiere on September 25, 2011.

Source:
http://en.wikipedia.org/wiki/The_Amazing_Race