Final answer:
In 'Into The Wild', Jan Burres is the one who finds McCandless riding a train to Oakland as he travels before reaching Alaska.
Step-by-step explanation:
In Into The Wild by Jon Krakauer, the person who finds McCandless riding a train to Oakland is Jan Burres.
Chris McCandless is the main character of the book, and his journey into the Alaskan wilderness is the focus of Krakauer's narrative nonfiction.
While the encounter on the train with Jan Burres is one of many interesting points on McCandless's travels before he reached Alaska, it is not the primary focus of the book, which is more concerned with his time in the wild and the reasons behind his solitary quest.