Amazon river dolphin widespread river dolphins. They are present in six countries in South America: Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela, in an area covering about . The boundaries are set by waterfalls, such as the Xingu and Tapajós rivers in Brazil, as well as very shallow water. A series of rapids and waterfalls in the Madeira River have isolated one population, recognized as the subspecies "I. g. boliviensis", in the southern part of the Amazon basin in Bolivia. They are also distributed in the basin of the Orinoco River, except the Caroni River and the upper Caura River in Venezuela. The
South American Cross Country Championships South American Cross Country Championships The South American Cross Country Championships is an annual continental cross country running competition for athletes from South America or, more specifically, member countries of CONSUDATLE. It was first held in 1986, making it the oldest of the continental cross country championships. The event is typically held in late February or early March. The South American Championships in Athletics were the precursor to the competition in that cross country was featured on the main athletics programme between 1924 and 1949. After the introduction of an independent championships in 1986, multiple races were held: the initial