18 Years Worth of Days The average retirement lasts for 18 years. Are you prepared to fill that many days? Share | Have A Question About This Topic? Address Thank you! Oops! Related Contents A Bucket Plan to Go with Your Bucket List A bucket plan can help you be better prepared for a comfortable retirement. Social Security: Five Facts You Need to Know Here are five facts about Social Security that are important to keep in mind. Potential Income from an IRA Estimate your monthly and annual income from various IRA types.