18 Years Worth of Days The average retirement lasts for 18 years. Are you prepared to fill that many days? Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents RE: Retirement How does your ideal retirement differ from reality, and what can we do to better align the two? Home Ownership by the Numbers Tips on home-buying for Millennials. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.