How many went to D.C.? Part 3

Yet another attempt at estimating the crowd size. The result: somewhere between 850,000 and 1.5 million.

But the people on Pennsylvania aren’t standing still: they’re walking, marching, at something between 2 and 4 miles per hour because that’s how fast people march. Let’s choose 3 mph: that would mean a line of people marching past a single point for three hours would be about 9 miles long. In that time, there would be enough people to fill that chunk of Pennsylvania about 8 times. That’s conservative, as what I’ve heard from people actually marching is that it was pretty packed; it wouldn’t be hard to believe the 1.5 million number either.

That’s 800,000 people.