Sabo and Ike Murray went mushroom picking along the Skeena River Sept. 22 but failed to meet up with another man at their boat at a designated time.
Police now know the two men became lost on the first day of their ordeal and hunkered down in an area that had been left out of the massive search zone that crews scoured for seven days.
The men decided after a week to start hiking out, and Sabo lost the strength to continue.
Police say Murray stayed with his friend until he died and then hiked for another two days, finding the railroad tracks where he was discovered by CN maintenance workers.
Both the coroner and the Terrace police forensic unit attended the site where Sabo's body was located, and the matter has been turned over to the coroner.