 Cyrus performed "I Miss You" as an encore on sporadic dates of her first headlining tour, the Best of Both Worlds Tour, which extended from October 2007 to January 2008. The tour's concert film uses the performance within the set, although it was not performed as such. The performance had Cyrus dressed in a white tank top, blue cardigan, and denim pants, and sole on the stage. She sat on a stool that placed towards the end of the runaway, performing with an acoustic guitar, as images and home footage of Ron Cyrus appeared on the screens. Chris William of Entertainment Weekly attended the November 8, 2007 concert at the San Diego Sports Arena in San Diego, California, and wrote, "So it was especially sweet when, for the encore, she ditched the dancers and enhancers and strummed an acoustic guitar on' I Miss You, 'vulnerably serenading her late grandpappy — and, for once, really looking and sounding 14. Not everyone noticed because, when she finished, half the seats were empty." Alison Bonaguro Dressed of the Chicago Tribune stated that, despite its simplicity, the performance on December 8, 2007 at the Allstate Arena in Rosemont, Illinois felt like as though it was the largest production of all. In a gray shirt and black pants, Cyrus performed the song, along with "Ready, Set, Don't Go" and "The Best of Both Worlds", on The Oprah Winfrey Show on December 20, 2007, as a screen displayed a light-blue background. On October 5, 2013, as part of a Saturday Night Live skit, Cyrus performed an excerpt from "I Miss You" with actress Vanessa Bayer.
