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.
Many Clouds Chase Many Clouds Chase The Many Clouds Chase is a Grade Two National Hunt steeplechase in Great Britain which is open to horses aged four years or older. It is run at Aintree over a distance of about 3 miles and 1 furlong (3 miles and 210 yards, or 5,020 metres), and during its running there are nineteen fences to be jumped. It is scheduled to take place each year in early December. The race is sponsored by Rewards4Racing and was first run as a Listed race in 2011. It was awarded Grade Two status and renamed in honour of Many