"Chasing the Sun" is a song recorded by American singer Hilary Duff. It was written by Colbie Caillat, Jason Reeves, and Toby Gad, the latter of whom also produced the track. It was Duff's first single release under her new recording contract with RCA Records. Undecided between "Tattoo", "All About You" and "Chasing the Sun" as her first single with RCA, Duff and the label eventually chose the latter as the first single, describing it as a "top-down, carefree, super catchy singalong song". The song is featured in a March of Dimes public service announcement.