The AD is a test of the dog’s endurance, conditioning, and physical structure. Endurance and physical structure are created by careful breeding. The conditioning is done by the handler. During the test, the dog trots next to the handler for a total of twelve and a half miles at a pace of 7.7-9.5 mph. The handler rides a bike for the test. There are two fifteen minute rest breaks where the judge will inspect the dog for tendor or worn pads, overall fatigue or poor conditioning. If the judge feels the dog is not fit to continue, the dog will be dismissed. After having completed the full distance the dog will be given a twenty minute rest period and have to perform a short obedience routine. The AD is not a title but is a requirement for dogs participating in the SV Korung system for German Shepherds. The conscientious handler will gradually condition their dog prior to the test. Several weeks of preparation are usually involved just as a human would work up to running a marathon.