George Washington University to Trenton, NJ buses and trains from $38

Or, see buses and trains from Trenton, NJ to George Washington University.
Here are some trips other travelers have found on Routefriend.
$38
2h 28m
1 stop
Amtrak NJTransit
$49
1h 55m
0 stops
Amtrak
$76
4h 1m
1 stop
Amtrak NJTransit
$116
4h 31m
1 stop
Amtrak NJTransit