Here is the full list of all 22 Grand Prix Rock 'N Racing achievements.
Finish Race
Win the Championship
Exceeds 380 Km/h
Finish Time Trial in 2:00 minutes or less
Finish Time Trial in 2:30 minutes or less
Finish Time Trial in 2:20 minutes or less
Finish Time Trial in 3:00 minutes or less
Finish Time Trial in 2:42 minutes or less
Finish Time Trial in 3:30 minutes or less
Finish Time Trial in 3:35 minutes or less
Finish Time Trial in 3:45 minutes or less
Finish Time Trial in 3:32 minutes or less