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 Ready for Retirement? Are you ready for retirement? Here are five words you should consider. Does Your Portfolio Fit Your Retirement Lifestyle? Lifestyle considerations in creating your retirement portfolio. Estimate Your RMD Help determine the required minimum distribution from an IRA or other qualified retirement plan.