Stamford, CT to Carnegie Mellon University buses and trains from $40

Or, see buses and trains from Carnegie Mellon University to Stamford, CT.
Here are some trips other travelers have found on Routefriend.
8h 40m
1 stop
Metro-North Greyhound
13h 6m
2 stops
Metro-North Amtrak
10h 22m
1 stop
Metro-North Amtrak
10h 13m
1 stop
Amtrak Amtrak
15h 3m
3 stops
Metro-North Amtrak