More bizarre activity quoted from the article:

To prepare for the canyon, she ran in the hills around Flagstaff for a few days. She also found a running partner, a Flagstaff man in his late 20s or 30s with whom she shared a Chicago connection. On July 8, they agreed to take on the canyon.

Rangers interviewed this man. They say they are not accusing him of wrongdoing and have refused repeated requests to identify him, citing his privacy and saying Bradley's family asked them to omit his name from public accounts. (A Freedom of Information Act request by The Times is pending.) Bradley's parents declined to comment for this article.