The Amazing Race 18

Hosted by Phil Keoghan, it featured eleven teams of two, each returning from a previous edition of the series, competing in a race around the world in order to win US$1,000,000.

Starting in Palm Springs, California, racers traveled through Australia, Japan, China, India, Austria, Liechtenstein, Switzerland, and Brazil before returning to the United States and finishing in the Florida Keys.

[4] Teams were spotted at Oceanworld Manly around November 22, 2010,[5] and a day later around the mining town of Broken Hill, New South Wales, in the Australian Outback.

[6] Other locales cited as destinations were Yokohama, Japan, where teams swam in freezing waters near Mount Fuji, and the series' first visit to Liechtenstein.

[9] Phil Keoghan described all the contestants as teams that "came so close to winning but for one reason or another just didn't quite make it over the finish line in first place.”[10] Keoghan gave examples of two teams: Zev & Justin from season 15, who had finished first on a leg, but lost a passport too late to continue racing; and Kisha & Jennifer from season 14, who took an ill-timed restroom break while racing to the Pit Stop and were eliminated.

[7] Though they had considered mother and son fan-favorites Toni and Dallas Imbimbo from season 13, Keoghan stated they felt the other selected teams "have the best stories and the best motivation" for casting.

The sixth leg of the season in Kolkata, India, featured several tasks involving a papaya-and-mango flavored tea Snapple developed and named after the show.

[15] Mallory returned on the same season forming a composite team with Mark Jackson when his partner, William "Bopper" Minton, was not medically cleared to compete.

"[24] Luke Dwyer of TV Fanatic wrote that "the start of The Amazing Race: Unfinished Business was chock full of dynamic challenges, interesting legs and surprises.

"[25] Michael Hewitt of the Orange County Register wrote that "the show still has much to recommend it: spectacular locations, engrossing human drama and brilliant editing.

[28] Kareem Gantt of Screen Rant wrote that this "the legs are fantastically planned and executed, the suspense was high, and viewers even got some emotional eliminations that made for great TV.

The starting line was at the San Gorgonio Pass wind farm near Palm Springs, California .
The complete route of The Amazing Race: Unfinished Business.
At Oceanworld Manly in Sydney , racers participated in a Roadblock where they did a scuba dive in the aquarium's shark tank.
Teams traveled to the city of Broken Hill in the Australian Outback .
The Roadblock in Kamakura had racers participating in yabusame : traditional Japanese mounted archery .
In Lijiang , teams rode yaks on the terraces of the Baishui River beneath Jade Dragon Snow Mountain .
Teams visited Stone Forest outside Kunming for a Roadblock paying homage to Yunnan's contributions to the field of paleontology .
The grounds surrounding the Victoria Memorial in Kolkata served as the Pit Stop on this leg.
Teams visited the holy city of Varanasi on the shores of the Ganges River in this leg of the race.
Teams' first destination in Austria was Schallaburg Castle in Schollach .
Teams traveled to the Matterhorn in the Swiss Alps where they participated in mountain rescue -themed Detour tasks.
While visiting Rio de Janeiro , teams traveled to the famous Escadaria Selarón and searched the tile-covered steps for their next clue.
Pigeon Key Historic District , located in the middle of the Old Seven Mile Bridge in the Florida Keys , was the finish line of The Amazing Race: Unfinished Business .