Milwaukee, Wis. ? Ten thousand Harley-Davidsons, their riders wearing anything from Hog masks and feather boas to black leather, roared through the city Saturday on a parade celebrating the company’s 100th anniversary.

Willie G. Davidson, a grandson of Harley-Davidson’s co-founder, and his wife, Nancy, led the eight-mile parade, followed by riders on bikes toting large Harley flags representing riders’ clubs from all over the world.

“The route was absolutely jammed, which made us feel like heroes of some sort,” said Davidson.

The parade was a highlight of Harley’s four-day anniversary celebration, which also includes motorcycle exhibits, memorabilia sales and live entertainment. The celebration, expected to draw 200,000 to 300,000 people, concludes today with a birthday party featuring music and fireworks beside Lake Michigan.