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 Retirement Redefined Around the country, attitudes about retirement are shifting. Inflation - Back to the Future Even low inflation rates over an extended period of time can impact your finances in retirement. Investment Strategies for Retirement Investment tools and strategies that can enable you to pursue your retirement goals.