- The song was originally titled, "Interlude."
- The song is written in the key of B major. Carlton wrote the song's piano riff in the summer of 1998 at her parents' house in Philadelphia; her mother, who had been listening to her, said, "Vanessa, that's a hit song." Carlton was unable to finish the song because of a case of writer's block, and did not return to it for several months. While looking for a record label that would sign her, Carlton played the beginning of the song for a record producer, who said, "You have to finish that." She returned to her parents' home and finished it in an hour one evening.
- As of April 2020, it remains Carlton's biggest hit in the United States, and her only single to reach the top ten of the Billboard Hot 100. The song also had widespread success worldwide, reaching number one in Australia, where it was most successful, the top five in Ireland, and the top ten in the United Kingdom, France, Italy, and the Netherlands.
- This got Grammy nominations for both Record of the Year and Song of the Year, it lost both to "Don't Know Why" by Norah Jones. Carlton performed this on the show.
- This song features prominently in the 2004 movie White Chicks, starring Shawn and Marlon Wayans as FBI agents who go undercover as white girls. The agents are nearly busted when they're riding in a car with some real white chicks when "A Thousand Miles" comes on and they don't know the words like every white girl should. Later in the movie, we find out that it's the favorite song of another character in the film, who happens to be a big black guy. The movie was trashed by critics and nominated for a Golden Raspberry award for Worst Movie, but some people love the film and lots of people saw it both in the theaters and on its many TV showings. When asked how she felt about her song in the movie. She said: "I thought it was hilarious. Those guys are really nice, too. I ran into them backstage or something, and they asked me if they could use it. They're like fans, they're so cute. But the scene that was in was hilarious." When we asked how she feels about the song being used as a white girls anthem, she replied, "If you've seen it, that's not the message of it. That is not the way that they plug it in the film. It's actually the secret song of that big, black dude in the SUV, it's like his jam. But the irony is that people associate it with a white girl playing the piano. It's like his secret jam, so it's able to push through all of those micro genres and you can't profile who's going to like the song. That's what they were displaying in that scene. And I really liked that a lot."
- The song was covered a cappella style by the cast during the movie Pitch Perfect 2.
- Kanye West included the song on his iTunes Celebrity Playlist. He said: "This must be the white song that all black people like, you know every year there's a song that black people like and this is that. I love the string arrangements."
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