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.
Taj Mahal Marathon marathon is also India's longest in terms of the distance. The Taj Mahal Marathon is not the first long-distance running event held in the city, which starts around Taj Mahal. Taj Mahal Marathon was organized by Adventure Marathon in 2008 and was discontinued thereafter. It was a 42.195 km long marathon. The course started in a small village of Niyamatpur and winded through the countryside before joining the main highway to the city of Agra, home of the Taj Mahal. Set over a largely flat course along the Chambal River from River Yamuna, and spanning 222 kilometres (138 miles), The