African Cross Country Championships West Africa competing". A number of smaller regional championships have been held in Africa: the East African Cross Country Championships and the Maghreb Cross Country Championships in North Africa are both well-established competitions. West and Central African competitions have also been held in past years. African Cross Country Championships The African Cross Country Championships is a regional cross country running competition for athletes from Africa. The competition had a one off edition in 1985 in Nairobi, Kenya, and the medallists were mostly from the host nation. Following an announcement by the International Association of Athletics Federations (IAAF) that the IAAF
Equator is commonly modeled as a sphere flattened 0.336% along its axis. This makes the Equator 0.16% longer than a meridian (a great circle passing through the two poles). The IUGG standard meridian is, to the nearest millimetre, , one arc-minute of which is , explaining the SI standardization of the nautical mile as , more than less than the geographical mile. The sea-level surface of the Earth (the geoid) is irregular, so the actual length of the Equator is not so easy to determine. "Aviation Week and Space Technology" on 9 October 1961 reported that measurements using the Transit IV-A