There is a multitude of taxis, motorbikes, and bicycle-powered cyclo taxis that are available to move people around Nha Trang. So you can take any means of transportation that suitable for you to enjoy your trip.
By motorcycle
In Nha Trang, as in the rest of Vietnam, motorcycles are the least safe but most convenient way of going around, especially to go to the beaches and sightseeing spots outside of the city. See the general advice for riding a motorcycle in Vietnam.
By bus
Nha Trang's city bus system is surprisingly useful for travellers that have more time than money. Buses are white and blue in color, have air conditioning, Vietnamese music, and are very cheap, typically costing less than US$ 0.50. While there is very few information available, online or otherwise, about city buses, there are not many bus routes such that it is relatively easy to understand them. In addition, buses are rarely crowded except on peak hours. On the negative side, buses are often infrequent and with limited working hours, drivers and fare collectors seldom speak English, and bus stops are often quite far from each other. Therefore, make sure that you have enough time and patience before going somewhere by bus.
On foot
Although not as treacherous as in Hanoi or Ho Chi Minh City, walking in Nha Trang is certainly no walk in the park. Zebra crossings are almost meaningless as no vehicle will ever stop for pedestrians crossing the street, and the few traffic lights in the city are systematically ignored. Pavements are often unusable for walking, as they are almost entirely occupied with parked motorcycles, kiosks and restaurant tables, such that pedestrians are expected to walk mostly in the road. See the general advice for crossing the road in Vietnam.
One of the few pleasant places to walk in Nha Trang is the walking path along the beach, which is quite well-maintained and lined with nice gardens, monuments and public places, although sometimes interrupted by motorcycle parking lots.
By taxi
Tourists are advised to take Mai Linh (preferably) or Vinasun taxis, where the drivers usually use the meter and do not attempt to cheat on tourists. A ride inside the city of Nha Trang should never cost more than a few dozen thousand dong. On the other hand, going to places outside of Nha Trang by taxi can cost hundreds of thousand dong, and possibly much more if you would like the driver to wait for you to bring you back to the city.
By cyclo
A wonderful option for seeing the sites is to hire a cyclo-driver for the day. This runs about USD15 plus tip. All the in-town highlights, the post office, and my choice of restaurants from 08:00-19:00. English skills may be basic. The driver will keep the touts away--a real bonus!
By bicycle
Nha Trang is quite flat and bicycles are easily found for hire, typically 20,000 dong for one day for a basic no-gears bike. Locals on bicycles are more commonly seen at night when its cooler and no sun to burn their skin. However, note that if you have no experience with Vietnamese traffic, you should think twice about using a bicycle as your main means of transport in Nha Trang.
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