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 2017 Year in Review Take a look at this 2017 Market Recap. What Is an Annuity? Annuities are versatile tools that can help you save for retirement and generate income in retirement. Retirement Plan Distributions There are a number of ways to withdraw money from a qualified retirement plan.