http://news.nationalgeographic.com/news/2007/06/070619-amazon-river.html Amazon Longer Than Nile River, Scientists Say] The Nile, which is about 6650 kilometers long, is an "international" river as its drainage basin covers eleven countries: Tanzania, Uganda, Rwanda, Burundi, the Democratic Republic of the Congo, Kenya, Ethiopia, Eritrea, South Sudan, Republic of the Sudan, and Egypt.