once at castelo, bus line 2344 reaches praia das congonhas (praia do barão) in about 40 minutes - a schedule can be seen here, exit on rua paranapua with av. dr. agenor de almeida loyola. due to safety concerns, we recommend going to ilha do governador 's beaches via taxi, and / or only accompanied by a professional guide or someone familiar with the area - a taxi ride costs about br$ 70 from rio's zona sul, each way.