Yes—retiring at 60 can be realistic when your savings cover the initial income gap, five years of pre-Medicare healthcare, and a retirement that may last three decades or longer.
At 60, the general 59½ early-distribution threshold has passed, but Social Security cannot start until 62 and Medicare usually begins at 65. The useful question is how much your portfolio must provide before and after those milestones—not only whether you have reached a particular balance.
See the age-60 timeline