General:

• At the time the show was filmed and broadcast, same-sex marriage was not legally recognized anywhere in the United States. Reichen and Chip were never legally married under U.S law, though they were married in a religious ceremony; CBS decided to honor their description of themselves as "married" for the purposes of the show.

In-Race:

• Because of the large number of duplicated names among the teams, nicknames were given to these individuals to tell them apart. For example, circus clown Jon of Al & Jon became "ClownJon" and model Jon of Kelly & Jon became "BuffJon". And the Steve who was racing with his son Josh was dubbed "DadSteve" and the Steve who was racing with a fellow air-traffic controller became "AirSteve".
• Tian Kitchen became the first woman in history to ever compete in the bull-riding event in Leg 7, after which she and teammate Jaree lost a great deal of time and were eliminated. This led to some controversy, as the task was not designed for a female participant to be able to complete and resulted in the last all-female team in the race being eliminated, sparing ultimate winners Reichen and Chip. After the event took place, Tian was the subject of a newspaper article in Alleppy, India.
• Reichen and Chip were not planning on taking the Fast Forward task in the Sepilok Orangutan Sanctuary in Leg 9. However, since they had unintentionally traveled in that direction, they decided to complete the route. Jon and Kelly were trying for the green pass (color of the Fast Forward indicator) but had to go back to complete the Detour and the Roadblock, barely beating out Chuck and Millie for a final four berth. Because the pit stop was the same location as the FF and Kelly & Jon had gone there in the failed attempt to earn the FF, they knew exactly where this location was while Chuck & Millie didn't. This gave them a navigational edge that helped cause Chuck & Millie's elimination.
• On Leg 11, Jon and Al attempted to get on the same flight as the other teams, but their Race-provided credit card was not accepted by the airline due to computer problems, and they were unable to make that flight. As this was an airline issue that production could not control, the production teams held up the three other teams when they arrived in Australia to make up for the time lost in resolving the card issue, and thus appearing to have all teams equally bunched out of the airport. However, Jon and Al still arrived last in the leg and were eliminated.
• Three legs had 36 hour Pit Stops, which occurred after Leg 3 in Gmunden, Austria; Leg 5 in Muirden, Netherlands; and Leg 7 in Alleppepy, India. There were also two 24 hour Pit Stops, after Leg 9 in Sepilok, Malaysia and after Leg 11 in Brisbane, Australia.
• David & Jeff were stuck in Sydney for so long during the last leg that they never reached the final part of the leg in Phoenix, Arizona. They were informed of Reichen & Chip's win along with Kelly & Jon's 2nd-place finish when they arrived on a task in Hawaii. Along with Joe & Bill on TAR1, they are the two teams in TAR history that reached the last leg but not the finish line.

Post-Race:

• After the race, Reichen & Chip "divorced" but still remained friends.
• After winning Reichen started a career in modeling, selling his own semi-nude annual calendar. He hosted "The Reichen Show" on the now-defunct Q Television and was a contestant on "Reality Stars Fear Factor," finishing in sixth/fifth place.
• Chip became active in gay-related charity and advocacy groups, and appeared on the 2005 reality "reunion show" Real Gay on Logo.
• In July, 2006, Lance Bass announced that Reichen and he were in a long-term relationship. On December 4, 2006, People Magazine reported that they had split.
• This was the last season where ties were allowed at the mat (and the subsequent distribution of additional first place prizes should there be a tie for first place). In subsequent seasons, even if teams arrived at the mat at the same time, an order would be determined, and the official check in times for teams arriving simultaneously would set a minute apart to avoid tying situations.
• This is one of three seasons not to be represented by at least one team on Amazing Race All-Stars (the others are Seasons 6 and 8-Family Edition). Kelly & Jon were supposed to represent Season 4 but backed out at the last minute.
• Amanda & Chris broke up, and Amanda is married.
• Josh Cottingham (of father and son Steve and Josh) is currently engaged.
• After the race, Kelly and Jon got married.
• After the race, Cindy and Russell broke up and no longer speak to each other.
• After the race, Millie and Chuck were engaged to be married but they postponed the wedding right before it was to happen.