California State University-Chico to Oakland, CA buses and trains from $30

Here are some trips other travelers have found on Routefriend.
$30
4h 10m
0 stops
Amtrak
$39
4h 37m
1 stop
Amtrak BART
$46
4h 46m
2 stops
Amtrak BART
$47
5h 7m
2 stops
Amtrak BART
$47
5h 7m
3 stops
Amtrak BART