Jill and her brother F.T. were originally applied for Season 1. Later, her brother was killed in 9/11, and John Vito and Jill race in remembrance of him during Season 3. After the race, they hosted a show that promoted Singapore tourism.

When describing the pit stop for each leg, Phil's voice-over originally said "the last team to check in here *will* be eliminated" for most legs, but would say "the last team to check in here *may* be eliminated" on non-elimination legs. This took away the suspense, as the audience knew based on the voice-over whether the leg was a non-elimination. Phil now says "the last team to check in here may be eliminated" on every leg to avoid spoiling whether that leg is a non-elimination leg.

Aaron (Season 3) accidentally stumbled upon one of the Pit Stops of Season 6 while backpacking in Europe.

John Keoghan, Phil Keoghan's father, was the local greeter at the Te Puke Pit Stop in New Zealand in Season 13.

Status of relationships from Season 1 -

After the race ended, Emily and Brennan started dating each other, but broke up after a few months in early 2002.

Frank and Margarita, who were separated parents, initially reconciled. However, they have since divorced and Frank has remarried.

Lenny and Karyn broke up due to their differences.