The crowd was much larger than the organizers thought it was going to be. The route of the actual march was changed. It was supposed to go down Independence Avenue but there were too many people on the street.
What they ended up doing was telling people to march up the numbered streets. Then take a left on Constitution and then walk to Pennsylvania Avenue.
And wave after wave after wave of people did just that.
From the Post on the people taking Metro:
The Women’s March on Washington led to Metro’s second-busiest day in history, as hundreds of thousands of revelers poured into the District, taking more than a million trips on the system in 19 hours of service.
The figures surpassed ridership for Friday’s presidential inauguration and trailed just behind President Obama’s record-setting inauguration in 2009, when 1.1 million trips were taken.
Metro General Manager Paul J. Wiedefeld said Metro recorded 1,001,613 station entries Saturday; by contrast, 570,557 trips were taken Friday, the day of President Trump’s inauguration as the 45th president.