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 The Long Run: Women and Retirement For women, retirement strategy is a long race. It’s helpful to know the route. What Is a Roth 401(k)? Roth 401(k) plans combine features of traditional 401(k) plans with those of a Roth IRA. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.