once at castelo, bus line 329 reaches praia dos bancários in about 50 minutes - a schedule can be seen on this page, exit on rua da praia corner with avenida ilha das enxadas. 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.