The Amazing Race premiered in 2001 and has gone on to see 757 competitors do their very best at solving puzzles, completing challenges, and navigating obstacles in a dizzying dash to the finish line.

Colin and Christie returned in The Amazing Race 31, aka The Amazing Race: Reality Showdown. And the second time around, they were almost unrecognizable to fans who watched them in season 5.

The Amazing Race is reviving one of its most memorable challenges from seasons past. Season five featured the teams participating in a challenge in which they had to plow up their clue with the ...