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 Preparing For the Ultimate Vacation Make your retirement as exciting as your next vacation. Retirement Traps to Avoid Beware of these traps that could upend your retirement. Self-Employed Retirement Plans Estimate the maximum contribution amount for a Self-Employed 401(k), SIMPLE IRA, or SEP.