The 13-year-old has been missing for more than two months.
He disappeared shortly after arriving to visit his father, Mark Redwine, in southwest Colorado for a court ordered visit.
Many of those who rallied says Mark knows more about his son's disappearance than he's led anyone to believe.
Dylan's disappearance is now considered a criminal investigation. His father has denied any involvement.
There is a reward of more than $50,000 for any information.