Getting around in Managua is convenient and practical by taxi. It offers greater flexibility than a bus and isn't very expensive.Most taxi rates are collective, which means you pay per person. A medium trip costs around 20 Cordoba and for a longer trip, about 35 Cordoba.
It is not uncommon, at first, for the driver to state an inflated price, so you can expect to dicker over the price a bit. In the city taxies are plentiful day or night so you don't have to wait long for one.It's best, for your own safety, to use authorized taxis only. You can recognize them by a shield and a number on the car's door and a lateral row of little black and white or yellow and black squares.
Managua has a lot of buses that will take you just about anywhere in the city. However, a tourist who travels by bus must be careful to prevent theftes and it's best to travel only by day. Otherwise, taking a bus is a good way to travel to other towns in Nicaragua.
Visiting Managua on foot isn't a good idea, because of the hot climate and the long distance you must walk. It is a better idea to go by bus or taxibecause most of the interesting things are on the other side of the city.Otherwise, it can be dangerous wandering around in Managua's quarters where you may run across someone who could do you harm.
Unfortunately Managua isn't a city designed with pedestrians in mind and crossing a busy street can rapidly become an adventure. There are not very many pedestrian crosswalks with traffic lights that allow for safe crossong and the drives are a little crazy.
If you want walk or jog, there are residential areas that are very quite with wide sidewalks where you can move about safely. Some areas that come to mind are Las Colinas, Santo Domingo, los Robles Altamira, Centroamerica Bolonia o el Dorado.