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? Social Security: Maximizing Benefits There are other ways to maximize Social Security benefits, in addition to waiting to claim them. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.