The Amazing Race: Unfinished Business

 is the eighteenth installment of The Amazing Race. It was confirmed on Nov. 5th, 2010 and is the first US season of The Amazing Race broadcast in High-Definition Format.

This is an All-Star season comprising two teams from Season 12, five teams from Season 14, two teams from Season 15, one team from Season 16 and one team from Season 17.

Teams

 * Main article: The Amazing Race 18 Teams

Results
The following teams participated in the Race, with their relationships at the time of filming. Placements are listed in finishing order:
 * All contestants have appeared on one previous season.

Amanda & Kris received a U-Turn for finishing last in the Starting Line Task By the end of Episode 1, Jet & Cord had not reached Phil at the "pitstop." Flight Time & Big Easy were initially checked in 3rd; however, they were retroactively issued a 30-minute penalty for moving Ron & Christina's personal belongings at the Detour. Ron & Christina were moved up to 3rd, while Kisha & Jen checked in 4th, and Jet & Cord were checked in 6th, leaving Flight Time & Big Easy in 5th place. By the end of Episode 4, neither Zev & Justin nor Kent & Vyxsin had checked in at the mat. Gary & Mallory used the Express Pass to skip the Leg 5 Roadblock after Gary had decided to do it. Although Kisha & Jen were the 5th team to arrive, due to a 30-minute penalty assessed to Kent & Vyxsin for miss the required flight from Tokio-Nrita to Kunming, they were the 4th team to be checked in. Kent & Vysxin arrived 3rd but were issued a 30-minute penalty for taking a taxi to the Pit Stop instead going on foot. All other teams checked in before the penalty expired and they were eliminated.

Route

 * Click here for this season's Route Map

Leg/Episode 1
Title: "Head Down and Hold On (Australia)" –- non-contestant
 * Starting Line: San Gorgonio Pass Wind Farm, Palm Springs, California
 * Teams had to search a field of paper airplanes to find one with "Qantas" written on it using the clue: "Queensland and Northern Territory Aerial Services", then return the airplane to Phil in exchange for their tickets to Sydney
 * The first 8 teams would be on the 1st flight, the rest on a 2nd flight, with the last team receiving an automatic U-Turn after completing this leg's Detour
 * Flight from Los Angeles International Airport, Los Angeles, California to Sydney (Kingsford Smith) Airport, Sydney, New South Wales, Australia
 * Circular Quay/Sidney Ferries to Manly Wharf, Manly
 * Oceanworld Manly
 * Who's ready to get tanked?: One team member must scuba dive and search for a compass hidden on the floor of a large shark tank, then use the compass to decipher a series of nautical flags which tell them the next location and catchphrase which they must tell the Commodore ("I am between the Devil and the deep blue sea")
 * Manly 16ft Skiff Sailing Club
 * Sail 16 Foot Skiff: Join a skiff crew and sail along a course to retrieve the next clue
 * Shelly Beach, Manly (Superleg midpoint)

Leg/Episode 2
Title: "I Never Looked So Foolish in My Whole Entire Life (Outback)" –-Kisha
 * Sydney Town Hall, Sydney
 * teams had to find a statue of an anchor outside Sydney Town Hall using the clue "To Sail to Stop"; there teams had to sign up to one of two charter flights
 * Sydney (Kingsford Smith) Airport, Sydney, New South Wales to Broken Hill Airport, Broken Hill, New South Wales
 * The Living Desert, Broken Hill
 * Spirit World: teams had use traditional materials to make a stone mosaic that matched a shown example, then they had to perform a dance upon the mosaic intended to raise ancestral spirits
 * Natural World: teams had to create Aboriginal territory markers by mixing a natural dye with water and use their mouths to spray the mixture onto a stencil to create four images
 * Central Football Club, Broken Hill
 * teams had to find the "Home of the Magpies"; while there, teams had to dress as kangaroos and find the corner of Mercury (Hg) and Bismuth (Bi) streets using a periodic table of elements with the symbols Hg and Bi highlighted
 * Junction Mine, Broken Hill

Leg/Episode 3
Title: "We Had a Lot of Evil Spirits Apparently (Japan)" --Christina
 * Broken Hill Station, Broken Hill to the Central Railway Station, Sydney via Indian Pacific
 * Sydney (Kingsford Smith) Airport, Sydney to Narita International Airport, Tokyo, Japan
 * Rotating Parking Garage, Shibuya, Tokyo
 * Yabusame Dojo, Kamakura, Kanagawa Prefecture
 * Who wants to go back 1000 years in time?: Team members must dress as samurai and learn the proper Yabusame Ritual and learn techniques for shooting a bow and arrow while seated on a revolving wooden horse.
 * Daiyūzan Station – Kintarō Statue, Minamiashigara
 * Prayer of Purity: teams take part in a Shinto cleansing ritual by donning traditional clothing, learning a prayer, and standing under a cascading waterfall of 45°F for one minute
 * Frog of Luck: teams strip down, enter a large mud pit and while being pelted with mud, search for a toy frog in the mud
 * Commodore Perry Monument, Kurihama, Yokosuka

Leg/Episode 4
Title: "This is the Most Stupid Day Ever (Lijiang, China)" --Vyxsin
 * Narita International Airport, Tokyo, Japan to Kunming Wujiaba International Airport, Kunming, Yunnan, China
 * Teams had to choose their own method of transportation to Lijiang
 * Kunming Railway Station to Lijiang Train Station
 * Kunming Wujiaba International Airport to Lijiang Airport
 * Jade Dragon Snow Mountain, Kunming
 * teams had to saddle a yak correctly and ride across a river
 * Spruce Meadow, Yúnshāpíng, Kunming
 * teams had to search for charms that depicted the twelve signs of Chinese zodiac, collect all twelve then attach them to a mobile in the correct order
 * Old Town of Lijiang
 * teams had to to verbalize their zodiac sign and place a written wish into a slot on a prayer wheel that matched the symbol they called out
 * Old Town of Lijiang
 * Hammer: teams went to a candy store and used mallets to pound liquid candy to the correct consistency, then cut and box the candy
 * Horn: teams had to take a large ceremonial horn and lead a group of dancers to Wencheng Palace
 * Eternal Tower on Lion Hill, Lijiang

Leg/Episode 5
Title: "Don't Ruin the Basketball Game (Kunming, China)" --Mallory
 * Lijiang Train Station, Lijiang to Kunming Railway Station, Kunming
 * Dounan Flower Market, Kunming
 * Golden Horse and Jade Cock Memorial Archway, Kunming
 * Honor the Past: teams must watch a traditional Tibetan performance and, without taking notes, place dolls representing the performers in the same order in which they appeared on stage.
 * Embrace the Future: teams must properly cary the parts of a solar water heating system to the the roof of a building and correctly install it
 * Chinese Minority Heritage Center, Kunming
 * Stone Forest, Shilin Yi Autonomous County
 * a team member had to a correctly put together a life-size model of a dinosaur; if the model was unsound, a paleontologist could order them to stop and redo the model
 * Green Lake Park, Kunming

Leg/Episode 6
Title: "I Feel Like a Monkey in a Circus Parade (Kolkata, India)" --Gary
 * Jin Fu Yi Zhan Tea Shop, Kunming
 * teams took part in a Chinese tea tasting ceremony where they were given a taste of the papaya-and-mango-infused tea that, unbeknownst to them at the time, would be featured in the upcoming Roadblock in Kolkata. Along with their next clue, they were given a brick of tea leaves that would also be used in the Roadblock.
 * Kunming Wujiaba International Airport, Kunming, China to Netaji Subhash Chandra Bose International Airport, Kolkata, West Bengal, India
 * Kolkata Town Hall, Kolkata
 * a team member had to take part in an Indian tea tasting ceremony. First, they had to take a papaya, a mango, and the brick of tea the teams received before leaving Kunming to the tea auctioneer. Then, they had to search among several hundred tea cups for one that held the same papaya-and-mango-infused tea that they tasted in China. Once they got the right tea, the auctioneer would give them their next clue.
 * Tiwari Tea Stall, Thakur Bari, Jorasanko
 * Hindu Art: teams traveled to the Rakhal Paul and Sons statue shop where they had to paint and then dress a statue of the Hindu god Ganesha. Once it was complete, they would receive their next clue.
 * Bengali Literature: teams traveled to the Dey's Publishing house and picked up eight bundles of the children's book Introduction to the Bengali Alphabet. They then got into a rickshaw school bus and traveled across town to the Victoria Institution High School and College and searched the grounds for the offices of the headmistress of the primary school where they would deliver the books and receive their next clue.
 * Fountain of Joy & Victoria Memorial, Maidan, Kolkata

Leg/Episode 7
Title: "You Don't Get Paid Unless You Win (Varanasi, India)" --Cord
 * Netaji Subhash Chandra Bose International Airport, Kolkata to Varanasi Airport, Varanasi, Uttar Pradesh
 * Tonga Stand, Varanasi
 * a team member had to search the streets six different Sadhus; each had one of six pieces of a phrase the racer had to decipher (Once you're over the hill you pick up speed); once the racer had all six fragments of the phrase, he/she had read the phrase to the another sadhu in exchange for the next clue.
 * Swaminath Akhara, Tulsi Ghat, Varanasi
 * Feed the Fire: teams travelled to Sakka Ghat to the home of a milkman where they had to make fifty patties made from water buffalo manure and slap them onto a wall to dry; then start a fire using dried patties in order to boil milk for local children
 * Feed the Buffalo: teams had to take a water taxi to pick up two bales of hay from an island in the Ganges then deliver it to an address in Varanasi near the Ksameshwar Ghat written on the hay bale
 * Ramnagar Fort, Ramnagar

Leg/Episode 8
Title: "I Cannot Deal With Your Psycho Behavior (Austria)" --Vyxsin
 * Varanasi Airport, Varanasi to Vienna International Airport, Vienna, Austria
 * teams went to an airport parking garage, chose a 2012 Ford Focus and used the rearview camera system to identify a clue written on the pavement
 * Schloss Schallaburg, Schollach
 * teams were given a book stamped with "Librarian Prunksaal/Österreichische Nationalbibliothek" which indicated their next destination
 * Austrian National Library – Prunksaal, Vienna
 * Long Hard Walk: teams went to the Sigmund Freud Museum to pick up a couch and deliver it one mile to Freud's former office at the University of Vienna
 * Quick and Easy Meal: teams had to go to the Wiener Riesenrad ferris wheel, pick up two traditional Austrian meals (Wiener Schnitzel, Sauerkraut, and Sachertorte), board the ferris wheel and consume both meals before the wheel completed one revolution (about 12 minutes)
 * Sternbräu Restaurant, Salzburg, Salzburg
 * a team member had to select an instructor, don a traditional chimney sweep uniform, and clean a chimney three times with a weighted rope
 * Villa Trapp, Salzburg

Leg/Episode 9
Title: "We're Good American People (Switzerland)" –-Zev
 * Salzburg Hauptbahnhof to Feldkirch, Vorarlberg
 * Schaanwald, Liechtenstein
 * One team member had to use an odometer and a VéloSoleX motorized bicycle to measure the entire length of the country of Liechtenstein, riding from Schaanwald to Balzers. At the end, they would meet up with former Winter Olympics alpine ski racer Marco Büchel who they would have to give the distance that they traveled: 22 km. If correct, Büchel would direct racers to Castle Gutenberg (German) where they would meet up with their teammate and read the next clue. If they were wrong, they would have to travel back to Schaanwald and start over.
 * Schaanwald, Liechtenstein
 * Gary & Mallory had to prepare the right mixture of gasoline and oil to power their bicycle for the Roadblock. They had to measure 25 parts gasoline to 1 part of oil, and had to figure out that the mixture required 2 liters of gasoline.
 * Castle Gutenberg
 * Balzers to Sargans, Sarganserland, St. Gallen, Switzerland
 * Sargans to Zermatt, Visp, Valais
 * Zermatt railway station
 * Cheese: teams traveled to the Restaurant Walliserkanne Zermatt where they would have to finish an entire pot worth of cheese fondue. Once the pot was empty, the restaurateur would give them an empty fondue pot with the name of the next location printed on the inside.
 * Wheeze: teams had to dress up as bellhops and deliver a total of 20 pieces of luggage to at least five hotels in Zermatt, where the manager would give them a receipt tag in return
 * Hinterdorf near the Inderbinen-Brunnen, Zermatt
 * Bergrestaurant-Moos, Zermatt

Leg/Episode 10
Title: "Too Many Cooks in the Kitchen (Switzerland)" –-Zev
 * Air Zermatt Rescue Helicopter Port, Zermatt
 * Search: teams used beacons to locate a dummy buried in the snow, then had to dig the dummy out of the snow
 * Rescue: teams used a hoist to rescue a live person trapped in a crevasse; one team member used the hoist to lower the other team mate into the crevasse, then lift both the team mate and the trapped person to the surface
 * Riffelalp to Zermatt (via Gornergratbahn)
 * Le Petit Cervin, Zermatt
 * a team member had to make a Travelocity Roaming Gnome out of chocolate by painting the inside of a chocolate mold the correct color, filling the mold with chocolate, then chilling the completed mold outside in the snow for 30 minutes
 * Swiss Cabin, Mürini & Mittagstadel, Zermatt

Legs 11 & 12/Episode 11
Title: "This is Where it Ends (Brazil & Florida)"--tba
 * to Galeão International Airport, Rio de Janeiro, Brazil
 * Galeão International Airport, Rio de Janeiro, Brazil to Miami International Airport, Miami, Florida, USA

Pit Stop Greeters

 * Click here for this season's Greeters

Phil's Diary

 * This season Phil Keoghan is presenting behind-the-scenes episodes of Phil's Diary.

Memorable Moments

 * The teams who were expected to land in Australia first got delayed due to a medical emergency of a sick passenger.
 * In the second half of the first leg, every team had to dress up as kangaroos while searching for their next clue.

Franchise

 * First season to have an automatic U-Turn.
 * No one is sent to the Elimination Station after the Episode 1.
 * First season to have Episode 1 end with a cliffhanger.
 * Most parent/child teams in a single season, 4.
 * First season to have only one Speed Bump in entire race
 * Second time the Finish Line has been in Florida.
 * (maybe)first season have no Fast Forward in the race corse

American

 * Lowest number of couples in love, two.
 * First season to have no one eliminated in the first leg.