At the Mode Select screen, select Password and enter the following.

Effect	Password
Round 2 - Sendai Hiland	GS123-T4919-727M6-L8CY8-8UAXK
Round 3 - Fuji Speedway	7WW06-JYO4T-ESMNN-EQFWY-AEP2N
Round 4 - Sportsland Sugo	GATAL-GGEGI-I329Y-QOL4S-8QNYK
Round 5 - Mine Circuit	NTW69-X8XBT-NBZ8C-CTXJI-65D1N