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 84 (World Geodetic System 1984) which is a standard for use in cartography, geodesy, and satellite navigation including GPS, also has an equatorial radius of 6,378.137 kilometres (3,963.191 mi). For both GRS 80 and WGS 84, this results in a length for the Equator of 40,075.0167 km (24,901.4609 mi). The geographical mile is defined as one arc-minute of the Equator, so it has different values depending on which radius is assumed. For example, by WSG-84, the distance is , while by IAU-2000, it is . This is a difference of less than over the total distance (approximately ). The earth