• Bus 01:  Binh Tan - Le Hong Phong - Vo Thi Sau - To Hieu - Truong Son - Phuoc Long - Le Hong Phong - Ma Vong - Street 23 October - Highway 1A - Highway 2 - Thanh Bus Station.
• Bus 02: Binh Tan - Tran Phu - Binh Tan Station - To Hieu - Tran Phu - Tran Quang Khai - Hung Vuong - Le Thanh Ton - Dinh Tien Hoang - Quang Trung - Tran Quy Cap - Ma Vong - Street 23/10 - Highway 1A - Highway 2 - Thanh Buses Station.
• Bus 03: Dam market - Ngo Gia Tu - Lo River (Phan Boi Chau) - Ngo Quyen - Pasteur - Tran Hung Dao - Nguyen Chanh - Ngo Gia Tu - Cuu Long - Le Hong Phong - Nguyen Tat Thanh - Lo River Stop.
• Bus 04: Hon Xen - Nguyen Thien Thuat - Vinpearl: Xen Island - Pham Van Dong - Ponagar Tower - Street 2/4 - Quang Trung - Ly thanh Tong - Le Thanh Tong - Nguyen Thien Thuat - Tran Quang Khai - Tran Phu - Bao Dai Palace - Da Bridge - Vinpeal Port.
• Bus 05: Tran Phu Bridge - To Hien Thanh - Ro Island: Northern Tran Phu Bridge - Nguyen Binh Khiem - Ngo Quyen - Phan Chu Trinh (Return way: Hoang Van Thu - Le Loi) - Hoang Hoa Tham - Nguyen Chanh - Le Thanh Tong (Return way: Dinh Tien Hoang) - To Hien Thanh - Nguyen Thi Minh Khai - Tran Phu - Da Tuong - Vo Thi Sau - Phuoc Long - Le Hong Phong - Nguyen Tat Thanh - Binh Tan Bridge - Hon Ro 1 Island.
• Bus 06: Southern Station - Northern Station - Luong Son market: Southern Sation - Street 23/10 - Yersin - Quang Trung - Street 2/4 - Northern Station - Nguyen Xien - Highway 1A - Luong Son Market (Luong Son Village).

Does anyone know where I can download a map showing the local bus routes in Nha Trang. I have searched without success. Thanks. 

I too searched for a Nha Trang bus map when I was last there in January. I even searched several book stores to no avail. Since we were there for a month, the wife and I just started jumping on all the different lines daily, taking them to their terminus and then paying the fare to return on the same route. If you're there for a while, you will learn the routes but sadly we haven't found a map 
I will say there is a bus line that will take you almost anywhere in Nha Trang, from Vinpearl cable car station to the very north of the city. Depending on the route, we paid 4,000 to 5,000d each for a ride. Avoid commuter hours if at all possible.

Well i got the number 4 bus from the corner of Biet Thu st and Nguyen Thien Thuat, the bus we got on was at 8am sharp and there was a local outside her shop and i asked how often the bus came and she said 15mins. it cost 3500 Dong to vinpearl front pretty much, hope this helps people in the future