Season 24 Episode 9

In this Active Route Marker, Cowboy brothers Cord (left) and Jet (right) must change into uniforms and clean a hotel room to meet Swiss standards in order to receive the next clue on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

In this Active Route Marker, Cowboy brothers Jet (left) and Cord (right) must calculate the model year of a Ford Mustang using the corresponding kilometers of two different Swiss cities in order to receive the next clue on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

At the Pit Start, Cousins Leo (left) and Jamal (right) must take the train from Orvieto, Italy to Chiasso, Switzerland on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

Newlyweds Brendon (left) and Rachel (right) take the train from Orvieto, Italy to Chiasso, Switzerland on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

Cousins Leo (left) and Jamal (right) must make their way to the next location on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

In this Active Route Marker, Newlyweds Brendon (left) and Rachel (right) must change into uniforms and clean a hotel room to meet Swiss standards in order to receive the next clue on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

Cousins Jamal (left) and Leo (right) must drive themselves to Engelberg and take a gondola up to the top of Mount Titlis in a race to the Pit Stop on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

Country singers Jennifer (left) and Caroline (right) must make their way to the next location on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

In this Active Route Marker, Country singers Caroline (left) and Jennifer (right) must change into uniforms and clean a hotel room to meet Swiss standards in order to receive the next clue on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

At the Pit Start, Country singers Caroline (left) and Jennifer (right) must take the train from Orvieto, Italy to Chiasso, Switzerland on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

In this Active Route Marker, Father/son team Connor (left) and David (right) must change into uniforms and clean a hotel room to meet Swiss standards in order to receive the next clue on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

In this Active Route Marker, Father/son team Connor (left) and David (center) must change into uniforms and clean a hotel room to meet Swiss standards in order to receive the next clue on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved

At the Pit Start, Father/son team David (left) and Connor (right) must take the train from Orvieto, Italy to Chiasso, Switzerland on the all-star edition of THE AMAZING RACE, Sunday, April 27 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Photo: CBS ©2014 CBS Broadcasting, Inc. All Rights Reserved