Coming from the A9 motorway:
Exit Denkendorf, then via Pondorf and Riedenburg to Prunn.
Coming from the A3 motorway: Exit Parsberg, then via Hemau and Riedenburg to Prunn.
Coming from the A93 motorway: Exit Abensberg, then via Kelheim to Prunn.
At Prunn follow the signs reading "Schloß Prunn" (ca. 3 km).
Near Prunn Castle car and bus parking facilities are available free of charge.
To get to Prunn Castle first take the train (www.bahn.com) to Saal/Donau, then the Bus VLK-1 to Nußhausen or Prunn. From each of these stops it is an approximately 20-minute walk to the castle.
For information on intercity bus lines and further means of travel please have a look on the Internet.