Davenport University to Rosalind Franklin University of Medicine and Science buses and trains from $41

Here are some trips other travelers have found on Routefriend.
$41
6h 46m
1 stop
Amtrak
$103
1d 17h
3 stops
Greyhound Amtrak
$104
8h 1m
3 stops
Greyhound Amtrak