Sara Vaugn is the daughter of David Ensrud and Alicia Gibson. In 2007, Vaughn married fellow cross country and track and field teammate Brent Vaughn, who now acts as her coach. They have three daughters: Ciara, Calia, and Cassidy. Vaughn also works as a full-time real estate agent. In 2017, she and her husband formed a scholarship fund that helps parents in undergraduate schools earn their degrees.