I achieved 277 sub-3s for Full Marathons as below table. They say that the world record of sub-3 lifetime achievement by single personal is 277 times. I tie the record for this.
Between 150th and 151st, there is 3 un-numbered results. These are uncounted ones because of emergency status in Japan. There is a consensus that during emergency status we don't include full-marathon achievements in total count world-wide.