Catholic University of America to Rhode Island College buses and trains from $37

Here are some trips other travelers have found on Routefriend.
8h 34m
1 stop
GotoBus Greyhound
10h 34m
2 stops
Megabus Greyhound
5h 42m
0 stops
8h 34m
2 stops
Amtrak Greyhound
7h 21m
1 stop
Amtrak Amtrak