Metrication in the United States traditional mile-based lengths. In the Olympics, athletes run 1500 meters, not 1600 meters. Running races in the U.S. are usually run in metric distances (e.g., the 100 metres dash or the 5K run), although the mile distance remains popular. But even 5 and 10 kilometer races most often have mile markers on the course, and no kilometer markers. Long-distance races are often measured in kilometers, although exceptions exist (generally 10 mile races). The marathon is referred to as a 26.219-mile race (the official marathon standard distance originally being in English units — 26 miles, 385 yards) rather than 42.195 km.
Philadelphia Marathon 5 miles) companion race to the Philadelphia Marathon. This race follows a shorter loop of the marathon, starting off on the expansive Benjamin Franklin Parkway before taking a turn on the scenic banks of the Schuylkill River and Martin Luther King Drive. Each runner receives a T-shirt, a finisher medal and a finisher certificate (available online after the race). The Philadelphia Marathon, who collaborated with Green Mountain Energy partnered with the Mayor’s Office of Sustainability and the Mayor’s Office of Civic Engagement to turn the race into an eco-friendly sporting event. In 2007, the Marathon’s eco-friendly events began with recycling