The first known U.S. cycling championship race took place in Springfield, Massachusetts. That was in 1883. Within 10 years, bike races had bigger crowds than baseball games.
After 1900, cycling started losing fans. Football, basketball, and hockey were taking off. After World War II, cycling sports started coming back in the U.S. In the 1960s and 1970s, kids who had grown up on bikes invented new sports. Two big ones were mountain biking and BMX. BMX stands for bicycle motocross. This sport is based on cross-country motorcycle racing. The return of cycling in the U.S. was on!