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.
U.S. Route 385 Gaines County starting between Seminole and Andrews down to US 90 in Marathon. In Oklahoma, US-385 runs through Cimarron County at the end of the Oklahoma panhandle. Fourteen miles north of the border, it joins with US-56, US-64, and US-412. The three highways run northeast into the county seat, Boise City. In the middle of town, the highways come to a traffic circle surrounding the Cimarron County Courthouse. The traffic circle serves seven highways (with most passing through, forming the state's only six-way concurrency): U.S. Routes 56, 64, 287, 385 and 412, and State Highways 3 and 325. Every numbered