Drawing an estimated 120,000 to 175,000 marchers according to police and organizers respectively,[1][2] more than the 1999 Seattle WTO protests, the March filled the entire 3-mile (4.8 km) route through downtown by early afternoon, making vehicle traffic across the route impossible.

[11] Sound Transit and King County Metro rerouted many bus routes and added additional Link light rail service in anticipation of disruption to the city's transportation grid.

[12] The march was routed on South Jackson Street through the Chinatown-International District neighborhood, causing major traffic disruptions.

[23] For days, regional knitting shops were sold out of pink yarn used to make pussy hats crafted and worn by the protestors.

[24] The Seattle march was endorsed by Washington's senior United States senator, Patty Murray, who said she would be physically present at the D.C.