This post is a list race courses in Mario Kart 64 (1997). There are 4 cups and 16 courses listed below. Source: mariowiki.com
Mushroom Cup
Luigi Raceway
Moo Moo Farm
Koopa Troopa Beach
Kalimari Desert
Flower Cup
Toad's Turnpike
Frappe Snowland
Choco Mountain
Mario Raceway
Star Cup
Wario Stadium
Sherbet Land
Royal Raceway
Bowser's Castle
Special Cup
D.K.'s Jungle Parkway
Yoshi Valley
Banshee Boardwalk
Rainbow Road
Mushroom Cup
Luigi Raceway
Moo Moo Farm
Koopa Troopa Beach
Kalimari Desert
Flower Cup
Toad's Turnpike
Frappe Snowland
Choco Mountain
Mario Raceway
Star Cup
Wario Stadium
Sherbet Land
Royal Raceway
Bowser's Castle
Special Cup
D.K.'s Jungle Parkway
Yoshi Valley
Banshee Boardwalk
Rainbow Road