California State University-Bakersfield to Tijuana, MX buses and trains from $57

Here are some trips other travelers have found on Routefriend.
$57
7h 40m
2 stops
Amtrak GotoBus
$67
6h 19m
2 stops
Amtrak GotoBus
$?
6h 19m
1 stop
Amtrak GotoBus