Mark & Bill
Team Profile
Members Mark Yturralde
Bill Kahler
Hometown San Diego, California
Relation Best friends
Occupation Comic-Con CFO (Mark)
College aid administrator (Bill)

The Amazing Race 13

Legs Competed 3
Legs Won 0
Placement 9th
Average Position 5.00
Roadblock Count Mark: 1
Bill: 1
Countries raced Flag of the United States.svg Flag of Brazil Flag of Bolivia

Mark Yturralde and Bill Kahler are a team of Best Friends on The Amazing Race 13.


Retrieved from

These comic book aficionados are determined to be the most strategic team ever to compete in the Race. Mark and Bill, friends for over 23 years, first met at a science fiction club and have been bonding over their love for comics and games ever since. Mark says that he "wears geek like a badge of honor."

Mark describes himself as outgoing, funny and smart. He is willing to go anywhere and isn't afraid of adventure. His last vacation was to Vanuatu in the South Pacific where he climbed a volcano.

Bill is the opposite of Mark—he describes himself as cautious, easygoing, goofy, yet competitive. When asked how the Race could change their friendship, Bill says that the Race might present them with some bad situations, but in the end, they'll finish with a deeper respect for one another.

These masterminds are ready to see what they are made of and are convinced that they can be one step ahead of the competition if they play their cards right.[1]

The Amazing Race 13

Race History

Mark & Bill's Race History
Episode Leg Destination(s) Detour Choice
Placement Notes
1 1 United States → Brazil Hard Way Up / Soft Way Down No Roadblock 4 of 11
2 2 Brazil Beach It / Docket Bill 2 of 10
3 3 Brazil → Bolivia Musical March / Bumpy Ride Mark 9 of 9 [1]
Average 5.00
     The team finished in first place
     The team finished in last place and was eliminated from the race
     The team finished in last place in a non-elimination leg
     The team finished in last and were supposed to be eliminated, but were saved by the Salvage Pass or The Save
     The team that won The Amazing Race
     The team that crossed the Finish Line second
     The team that crossed the Finish Line third
The team used the Fast Forward pass
The team used the U-Turn
Recipient of the U-Turn

1: Mark & Bill initially arrived 8th, but were issued a 30-minute penalty for taking a taxi instead of going on foot to the Bumpy Ride Detour. During this time, Kelly & Christy – the only team trailing them at that point – were able to check in and Mark & Bill were eliminated before the 30 minutes elapsed.



  • Mark & Bill are the first team to be eliminated in Bolivia.
  • featured them for a 'National Best Friend Day' celebration slideshow in 2015.[3]

External Links


  • Oscar Dahl at BuddyTV (10/13/2008): "Mark and Bill, from The Amazing Race 13"
  • John Bracchitta at Reality TV World (10/13/2008): "Exclusive: Mark Yturralde, Bill Hahler talk about The Amazing Race"
  • Brian Gianelli at (10/14/2008): "I'm Obi-Wan, He's Anakin: Mark and Bill On Their Surprise Elimination from The Amazing Race"
  • Teeuwynn Woodruff at RealityNewsOnline (10/20/2008): "I Can't Conceive of Any Person Who Could Come Back and Be the Exact Same Person"
  • Reyma Buan-Deveza at (10/21/2008): "The Adventures of Mark and Bill: A lifetime's memories of Amazing Race"
  • Kynt & Vyxsin at (06/08/2009): "The Amazing Race's Mark Yturralde: Where Is He Now?"