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 Preparing For the Ultimate Vacation Make your retirement as exciting as your next vacation. 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.