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 Question Thank you! Oops! Related Contents Rightsizing for Retirement What does your home really cost? The Pre-Retirement Checklist This checklist can give you a quick snapshot of how prepared you are. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.