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.
Comrades Marathon Comrades Marathon The Comrades Marathon is an ultramarathon of approximately 89 km (approx. 55 miles) which is run annually in the KwaZulu-Natal Province of South Africa between the cities of Durban and Pietermaritzburg. It is the world's largest and oldest ultramarathon race. The direction of the race alternates each year between the "up" run (87 km) starting from Durban and the "down" run (now 90.184 km) starting from Pietermaritzburg. The field is capped at 25,000 for 2019. In all but three runnings since 1988, over 10,000 runners have reached the finish within the allowed 11 or 12 hours. With increased