Eleven teams will embark on the adventure of a lifetime on the new season of "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Sisters Liz (left) and Marie Canavan compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Childhood Sweethearts Bill (left) and Cathi Alden compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Reality stars Ethan Zohn (left) and Jenna Morasca compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Engaged couple Ernie Halvorsen (left) and Cindy Chiang compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Married NFL couple Amani (left) and Marcus Pollard compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Flight Attendants Ron Zeitz (left) and Bill Smith compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Pro Snowboarders Andy Finch (left) and Tommy Czeschin compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Vegas Showgirls Kaylani Paliotta (left) and Lisa Tilley compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Father/Son Sailors Laurence (left) and Zac Sunderland compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Siblings Justin Young (left) and Jennifer Young compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM

Dating friends Jeremy Cline (left) and Sandy Draghi compete in "The Amazing Race 19."CBS/Sonja Flemming - Wednesday, August, 31, 2011, 4:31 PM