DC’s The Flash covered four years from December 1962’s #133 to August 1966’s 163.
In some ways it feels like a lot has happened, but not much has moved. The characters are all the same. This is the great difference between DC where story device is central, with each tale being resolved in 24, 16, or 8 pages with the status quo neatly in place, and Marvel where melodrama carries narratives forward.
DC’s gogo checks had arrived, but not much else had changed. In story terms the fastest man alive is running on the spot. That would soon change.