Naab is a river located in Germany, primarily flowing through the state of Bavaria. It is a tributary of the Danube River and is approximately 125 kilometers long. The river is known for its scenic landscapes and is a popular destination for outdoor activities such as hiking and cycling along its banks. The Naab River has several tributaries, including the Vils and Pfreimd rivers. It passes through various towns, including Schwandorf and Nabburg, contributing to the local economy and providing recreational opportunities for residents and visitors alike. The river plays a significant role in the region's ecology and water management.