Hosted by Phil Keoghan, it featured eleven teams of two, each with a pre-existing relationship, competing in a race around the world to win US$1,000,000.
After the anemic ratings for The Amazing Race 4, CBS chairman and CEO Les Moonves doubted whether the series would be renewed for another season.
[6] This season traveled 72,000 miles (116,000 km), which was the show's longest route yet, covering six continents and twelve countries.
[7] The teams visited nine countries not previously seen on the show: Uruguay, Argentina, Russia, Egypt, Kenya, Tanzania, the United Arab Emirates, the Philippines, and Canada.
During pre-production, the producers moved the Dubai leg from the originally planned location of Istanbul, Turkey.
The Zorb task in Leg 10 was filmed at a New Zealand farm owned by a friend of host Phil Keoghan.
[9] When they arrived at the Roadblock site in Luxor, Egypt, after all of the other teams had already left, they decided to give up rather than complete the task.
They included a dating widowed couple, female twins, a former Big Brother contestant, and a team member with dwarfism.
Alison Irwin of CBS's Big Brother 4 was the first contestant from a previously aired reality show to take part in The Amazing Race.