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 Message Thank you! Oops! Related Content Rightsizing for Retirement What does your home really cost? What Is a Stretch IRA? If you have a traditional IRA, you may have the opportunity to extend its tax-deferred status across multiple generations. Retirement Plan Distributions There are a number of ways to withdraw money from a qualified retirement plan.