Source:
http://www.greyhound.com/scripts/en/TicketCenter/Step3.asp
Yes, that is it. Only he transfered in St. Louis, Denver, Salt Lake City and SFO.
I have to notify all these police stations with info. I am in the process of that now.
If that bus schedule is correct, the first place I’d look is Denver. He would have been all the bus all night and have to make a transfer when he was probably very tired. Also, a stranger in a small town like say, Hays, Kansas, would be found very quickly.
But that’s not based on any expertise—just thinking about the problem here. Prayers for your son.