Mirrored courses:
Win the gold cup in the 150cc class. After the Nintendo 64 is reset,
the title screen will change to confirm that mirrored courses are enabled.
Enter the 150cc option under GP mode to access the courses. Note that when
racing the mirrored Toads' Turnpike, you will be going against the traffic.
Mario 64 castle:
Follow the yellow road to the right of the big jump on the Royal Raceway
course to reach the castle from Mario 64.
Course ghost racers:
Enter time trial mode and complete a course, beating the time indicated
below. Then, select "Retry" to race the course again. The phrase
"Now Meet the Course Ghost" will appear. The course ghosts are
automatically saved to the cartridge for future replay without beating the
course time again.
| Course | Time |
| Mario Raceway | 1'30"00 |
| Luigi Raceway | 1'52"00 |
| Royal Raceway | 2'40"00 |