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? 9 Facts About Social Security There are things about Social Security that might surprise you. Investment Strategies for Retirement Investment tools and strategies that can enable you to pursue your retirement goals.