The Fashion Institute of Design & Merchandising-Los Angeles to Colorado Technical University buses and trains from $159

Here are some trips other travelers have found on Routefriend.
$159
1d 0h
1 stop
Amtrak
$205
1d 3h
2 stops
GotoBus Amtrak
$293
1d 3h
2 stops
GotoBus Amtrak
$327
1d 6h
4 stops
Greyhound Amtrak