18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? Share | Related Content 2017 Year in Review Take a look at this 2017 Market Recap. Eight Mistakes That Can Upend Your Retirement There are common mistakes you can avoid when saving for retirement. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.