travel time from ipanema to parque da cidade of niterói varies between 60 and 80 minutes driving - this is completely dependant on the time of day since traffic significantly increases during rush hour.
the buses in the city which drive to that area display the sign 'niterói/charitas' and are operated by the two companies auto viaçăo 1001 and braso lisboa - both lines follow an identical route - detailed bus itineraries for the two bus lines can be seen here and here.
there is no bus service that gets to the entrance to the parque da cidade, so the only option is a walk from the bus stop near praça rádio amador, or a 10 minute taxi ride.
