"Chasing the Sun" is a song recorded by American pop rock singer Hilary Duff. It was written by Colbie Caillat, Jason Reeves, and Toby Gad, the latter of whom also produced the track. It is Duff's first single released since departing from her previous label Hollywood Records in 2008, under her recording contract with RCA Records. Undecided between "Tattoo", "All About You" and "Chasing the Sun" as the album's lead single, 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.