Many consider the Madrid Marathon to be the country's foremost athletic event, and it garners a great deal of attention. Also known as the Rock 'n' Roll Madrid Marathon, its course features difficult hills that challenge some runners, but generally draw positive reviews. The route is usually changed up every year. People from all over come to experience the marathon, which passes by some of Madrid's most iconic landmarks, such as monuments, palaces, and parks. Every year, the event draws in over 35,000 participants. The Maratón de Rock 'n' Roll Madrid was initially established in 1978, and since then, a 10km road race and Half-marathon road race have been added.