The surface of road races is highly important and the PIAF dictate that the courses must be along man-made roads, bicycle paths or footpaths. Courses set along major roads of cities are typical of road running events, and traffic is usually cordoned off from the area during the competition. While soft ground, such as grass, is generally avoided, races may start and finish on soft ground or within a track and field stadium. Road racing courses come in two primary types: looped and point-to-point. Courses may be measured and designed to cover a standardized distance, such as 10 km (6.2 mi), or they may simply follow a set route between two landmarks.
Road running courses over 5 km usually offer drinks or refreshment stations for runners at designated points alongside the course and medical professionals are present at the courses of major races due to the health risks involved with long-distance running.
Elite road walks are conducted on closed loop courses (usually loops of 2,000 or 2,500 meters). Refreshment stations are also present over long distance walking competitions, with drinks being available on every lap for races longer than 10 km.It is popular game are play in every country.
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