Preparing For the Ultimate Vacation Make your retirement as exciting as your next vacation. Share | 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? How Will Working Affect Social Security Benefits? Knowing the rules may help you decide when to start benefits. Saving for Retirement This calculator can help you estimate how much you may need to save for retirement.