Finish first place on the indicated track and circuit to unlock the corresponding racer:
 
Racer Track/Circuit
Sebulba Boonta Classic/Galactic
Aldar Beedo Beedo's Wild Ride/Amateur
Ratts Tyerell Howler Gorge/Semi-pro
Mawhonic Andobi Mountain Run/Galactic
Slide Paramita AP Centrum/Invitational
Clegg Holdfast Aquilaris Classic/Amateur
Bullseye Navior Sunken City/Semi-pro
Ark Bumpy Roose Bumpy's Breakers/Semi-pro
Wan Sandage Scrapper's Run/Semi-pro
Bozzie Baranta Abyss/Invitational
Neva Kee Baroo Coast/Semi-pro
Ben Quadinaros Inferno/Invitational
Teemto Pagalies Mon Gazza Speedway/Amateur
Mars Guo Spice Mine Run/Amateur
Boles Roor Zugga Challenge/Semi-pro
Fud Sang Vengeance/Amateur
Toy Dampner Executioner/Galactic