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 A Fruitful Retirement: Social Security Benefit Taking your Social Security benefits at the right time may help maximize your benefit. A Meal for All Generations When it comes to generational differences, knowing the facts can be difficult. Saving for Retirement This calculator can help you estimate how much you may need to save for retirement.