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.
Spirit of the Marathon Salazar, Grete Waitz, Paula Radcliffe, Joan Benoit-Samuelson, and Kathrine Switzer provide commentary about the sport. The focus is then on the six featured runners and their training for the 2005 Chicago Marathon. American Deena Kastor and Kenyan Daniel Njenga are both elite runners, and are determined to win the race. Kastor was the bronze medalist at the 2004 Olympic Marathon, but has yet to win a marathon. Njenga had finished second multiple times in previous Chicago Marathons. Kastor is shown training and recovering from an injury in Mammoth Lakes, California, while Njenga's life as a sponsored runner in Tokyo is