Rondonópolis is the third-largest municipality in Mato Grosso, Brazil. It is located around 215 km from Cuiabá, the capital of the state. The city …Rondonópolis is the third-largest municipality in Mato Grosso, Brazil. It is located around 215 km from Cuiabá, the capital of the state. The city is named for military officer and explorer Cândido Rondon.