18 Years Worth of Days The average retirement lasts for 18 years. Are you prepared to fill that many days? Share | Related Content Women and Retirement Women must be ready to spend, on average, more years in retirement than men. A Bucket Plan to Go with Your Bucket List Longer, healthier living can put greater stress on retirement assets; the bucket approach may be one answer. An Inside Look at Retirement Living A number of questions and concerns need to be addressed to help you better prepare for retirement living.