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? Address Thank you! Oops! Related Contents Should You Tap Retirement Savings to Fund College? There are three things to consider before dipping into retirement savings to pay for college. Does Your Portfolio Fit Your Retirement Lifestyle? Lifestyle considerations in creating your retirement portfolio. Retirement Plan Distributions There are a number of ways to withdraw money from a qualified retirement plan.