Road racing is a competitive sport where participants race on paved roads, typically in organized events. It can include various formats, such as time trials, criteriums, and long-distance races. Cyclists or runners often compete against each other or against the clock, aiming for the fastest time over a set distance. Events can vary in length, from short sprints to marathons, and may take place on closed courses or public roads. Road racing is popular worldwide, with notable events like the Tour de France for cycling and the Boston Marathon for running, attracting both amateur and professional athletes.