Retirement Traps to Avoid Full Size Version Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content 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? Social Security Benefits: How Much Will I Receive Calculating your potential Social Security benefit is a three-step process. My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates.