The North-south along the city has about 30 kilometer length. Da Nang station is one of the most important stations in the north-south railway. Therefore, tourists can go to Da nang by train, it just takes about 13 hours. You can enjoy the beautiful landscape through the window of the train. It‘s very interesting.
If you have not much time, you can go by plane. However, you will not have chance to contemplate landscape as the train.
From Ho Chi Minh to Danang, you can use bus.
From Hanoi to Danang, you can come to Noi Bai airport. Here, there have many flights.