18 Years Worth of Days Test Your Investment Knowledge! How much do you know about investing? Take our quiz and find out instantly. First Name Last Name Email Address Thank you! Oops! 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 Rightsizing for Retirement What does your home really cost? Healthcare Costs in Retirement Without a solid approach, health care expenses may add up quickly and potentially alter your spending. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.