Asking for the CCG will get you banned off this website. It is like the FIRST thread in this forum. Also. There are a million threads in here about the Moffat sub headed west. Trying searching for Denver in the train hopping forum.
You have 2 choices, go north to Cheyenne and hit the overland to Portland OR Roseville. Or go west to SLC via UP coal or bnsf manifest. Trains are few and far between in that sub