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 Consequences Make more informed financial decisions with Waddell & Reed WealthLink. I can show you how. Certain Uncertainties in Retirement The uncertainties we face in retirement can erode our sense of confidence. Retirement Plan Distributions There are a number of ways to withdraw money from a qualified retirement plan.