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? Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content A Fruitful Retirement: Social Security Benefit Taking your Social Security benefits at the right time may help maximize your benefit. Silver Sneakers 101 Medicare’s popular program, offering free gym membership and health education. The Latte Lie and Other Myths Check out this video to begin separating fact from fiction.