Colin and Christie
Colin Guinn (38) and Christie Woods (40)
Life Partners from Austin, Texas
Previous season: The Amazing Race 5
Leo and Jamal
Leo Temory (31) and Jamal Zadran (30)
Cousins from Pasadena, Calif. and Houston, Texas
Previous seasons: The Amazing Race 23 and The Amazing Race: All-Stars
Tyler and Korey
Tyler Oakley (31) and Korey Kuhl (33)
Friends from Los Angeles and San Francisco
Previous season: The Amazing Race 28
Chris and Bret
Chris Hammons (40) and Bret Labelle (44)
Friends from Moore, Okla. and Dedham, Mass.
Previous season: Survivor: Millennials vs. Gen X
Corinne and Eliza
Corinne Kaplan (39) and Eliza Orlins (35)
Friends from Denver, Colo. and New York
Previous seasons: Survivor: Gabon and Survivor: Caramoan (Corinne); Survivor: Vanuatu and Survivor: Micronesia (Eliza)
Nicole and Victor
Nicole Franzel (26) and Victor Arroyo (28)
Dating from Ubly, Mich.
Previous seasons: Big Brother 16, winner of Big Brother 18 (Nicole); Big Brother 18 (Victor)
Rupert and Laura
Rupert (54) and Laura (49) Boneham
Married from Indianapolis, Ind.
Previous seasons: Survivor: Pearl Islands, Survivor: All-Stars, Survivor: Heroes vs. Villains, and Survivor: Blood vs. Water (Rupert); Survivor: Blood vs. Water (Laura)
Becca and Floyd
Becca Droz (28) and Floyd Pierce (23)
Friends from Boulder and Highlands Ranch, Colo.
Previous season: The Amazing Race 29
Janelle and Britney
Janelle Pierzina (38) and Britney Haynes (30)
Friends from Lakeville, Minn. and Tulsa, Okla.
Previous seasons: Big Brother 6, Big Brother All-Stars and Big Brother 14 (Janelle); Big Brother 12 and Big Brother 14 (Britney)
Rachel and Elissa
Rachel Reilly (34) and Elissa Slater (32)
Sisters from Van Nuys, Calif. and Las Vegas, Nev.
Previous Seasons: Big Brother 12, winner Big Brother 13, The Amazing Race 20 and The Amazing Race: All-Stars (Rachel); Big Brother 15 (Elissa)
Art and JJ
Art Velez (49) and John James "JJ" Carrell (49)
Friends from Temecula and San Marcos, Calif.
Previous season: The Amazing Race 20