Answer:
Dissociative fugue
Step-by-step explanation:
Based on the scenario that is being described, it seems that the man is most likely suffering from Dissociative fugue. This is a psychological state that was formerly known as a psychogenic fugue. This state is characterized as when an individual loses awareness of their identity or any/all other important autobiographical information, while also engaging in some form of unexpected travel. Which would explain why the man in this scenario does not know who he is and has traveled far from where he actually lives.