| # | Driver | Team | Championships | Career wins | FIA Category | Racer Rating |
|---|---|---|---|---|---|---|
| 1 | George Kurtz | Crowdstrike Racing by D Motorsports | 3 | 22 | Bronze | 5,617 |
| 2 | Nolan Siegel | Jr III Racing | 0 | 10 | Gold | 5,455 |
| 3 | Gar Robinson | Riley Motorsports | 2 | 15 | Silver | 5,336 |
| 4 | Kenton Koch | One Motorsports | 2 | 37 | Gold | 5,209 |
| 5 | Ugo De Wilde | Muehlner Motorsports America | 0 | 9 | Silver | 5,181 |
| 6 | Memo Gidley | JDC MotorSports | 1 | 31 | Bronze | 5,024 |
| 7 | Dan Goldburg | Performance Tech Motorsports | 0 | 7 | Bronze | 4,903 |
| 8 | Rasmus Lindh | Performance Tech Motorsports | 0 | 6 | Silver | 4,835 |
| 9 | Seb Priaulx | Sean Creech Motorsport | 1 | 15 | Gold | 4,818 |
| 10 | Naveen Rao | WIN Autosport | 1 | 3 | Bronze | 4,743 |
| 11 | Tyler Maxson | MLT Motorsports | 1 | 13 | Silver | 4,706 |
| 12 | Kaz Grala | Ave Motorsports with GRS | 0 | 7 | Silver | 4,701 |
| 13 | Alan Brynjolfsson | VOLT Racing with Archangel | 1 | 4 | Bronze | 4,608 |
| 14 | Danny Formal | CT Motorsports LLC | 3 | 40 | Silver | 4,570 |
| 15 | Laurents Hoerr | Muehlner Motorsports America | 0 | 1 | Silver | 4,538 |
| 16 | Oscar Tunjo | Muehlner Motorsports America | 1 | 14 | Silver | 4,519 |
| 17 | Parker Thompson | Sean Creech Motorsport | 1 | 18 | Silver | 4,504 |
| 18 | Jacob Eidson | O'Gara Motorsport / USRT | 0 | 5 | Silver | 4,469 |
| 19 | Stevan McAleer | Robillard Racing | 1 | 15 | Gold | 4,361 |
| 20 | Dillon Machavern | Muehlner Motorsports America | 1 | 9 | Silver | 4,348 |
| 21 | Orey Fidani | AWA | 0 | 2 | Bronze | 4,263 |
| 22 | Trent Hindman | VOLT Racing with Archangel | 2 | 18 | Gold | 4,246 |
| 23 | Jonathan Bennett | Crowdstrike Racing by D Motorsports | 1 | 7 | Bronze | 4,245 |
| 24 | Efrin Castro | Muehlner Motorsports America | 2 | 26 | Bronze | 4,233 |
| 25 | Scott Huffaker | CT motorsports LLC | 0 | 5 | Silver | 4,232 |
| 26 | Tonis Kasemets | Wulver Racing | 1 | 7 | Silver | 4,209 |
| 27 | Mike Skeen | Jr III Racing | 1 | 23 | Silver | 4,190 |
| 28 | Shane Lewis | Riley Motorsports | 0 | 6 | Bronze | 4,190 |
| 29 | Riley Dickinson | Muehlner Motorsports America | 1 | 17 | Silver | 4,162 |
| 30 | Moritz Kranz | Muehlner Motorsports America | 5 | 40 | Silver | 4,156 |
| 31 | Stephen Simpson | JDC MotorSports | 0 | 3 | Silver | 4,145 |
| 32 | Matthew Bell | WIN Autosport | 2 | 13 | Gold | 4,115 |
| 33 | Dakota Dickerson | MLT Motorsports | 2 | 13 | Silver | 4,068 |
| 34 | Garett Grist | Jr III Racing | 0 | 8 | Gold | 3,994 |
| 35 | Anthony Mantella | AWA | 0 | 2 | Bronze | 3,971 |
| 36 | Corey Lewis | MLT Motorsports | 1 | 12 | Silver | 3,855 |
| 37 | Jarett Andretti | Andretti Autosport | 0 | 2 | Silver | 3,852 |
| 38 | Steven Thomas | WIN Autosport | 1 | 22 | Bronze | 3,852 |
| 39 | Bruce Hamilton | Wulver Racing | 0 | 2 | Bronze | 3,791 |
| 40 | CR Crews | Muehlner Motorsports America | 0 | 1 | Bronze | 3,737 |
| 41 | Gerry Kraut | JDC MotorSports | 0 | 2 | Bronze | 3,733 |
| 42 | Anthony Lazzaro | Sean Creech Motorsport | 0 | 2 | Bronze | 3,716 |
| 43 | Nigel Greensall | Sean Creech Motorsport | 0 | 1 | Bronze | 3,690 |
| 44 | Joe Robillard | Robillard Racing | 0 | 0 | Bronze | 3,613 |
| 45 | Lance Willsey | Sean Creech Motorsport | 0 | 8 | Bronze | 3,597 |
| 46 | Alexander Koreiba | JDC MotorSports | 0 | 4 | Silver | 3,583 |
| 47 | Thomas Merrill | Jr III Racing | 1 | 13 | Silver | 3,546 |
| 48 | Peter Ludwig | Conquest Racing / JMF Motorsports | 0 | 1 | Bronze | 3,519 |
| 49 | Mark Kvamme | Muehlner Motorsports America | 1 | 18 | Bronze | 3,506 |
| 50 | Josh Sarchet | MLT Motorsports | 1 | 1 | Bronze | 3,502 |
| 51 | Alex Popow | Muehlner Motorsports America | 1 | 4 | Silver | 3,460 |
| 52 | Antoine Comeau | Conquest Racing / JMF Motorsports | 0 | 1 | Bronze | 3,440 |
| 53 | Terry Olson | Jr III Racing | 0 | 5 | Bronze | 3,407 |
| 54 | Christopher Allen | Performance Tech Motorsports | 0 | 15 | Bronze | 3,379 |
| 55 | Michael Watt | D MOTORSPORTS | 0 | 2 | Bronze | 3,359 |
| 56 | Aristotle Balogh | Jr III Racing | 0 | 3 | Bronze | 3,351 |
| 57 | Patrick Kujala | US RaceTronics | 0 | 5 | Gold | 3,328 |
| 58 | Niclas Jönsson | D MOTORSPORTS | 0 | 2 | Silver | 3,260 |
| 59 | Oscar Bitar | Performance Tech Motorsports | 0 | 0 | Silver | 3,235 |
| 60 | David Grant | JDC MotorSports | 0 | 0 | Bronze | 3,223 |
| 61 | Jon Brownson | Forty7 Motorsports | 0 | 1 | Bronze | 3,187 |
| 62 | Brian Thienes | US RaceTronics | 0 | 1 | Bronze | 3,173 |
| 63 | Mel Johnson | One Motorsports | 0 | 0 | Bronze | 3,168 |
| 64 | Steve Scullen | CT Motorsports LLC | 0 | 0 | Bronze | 3,160 |
| 65 | Courtney Crone | Forty7 Motorsports | 0 | 0 | Silver | 3,150 |
| 66 | Natasha Balogh | Jr III Racing | 0 | 0 | Silver | 3,147 |
| 67 | Colin Mullan | Conquest Racing / JMF Motorsports | 0 | 1 | Silver | 3,146 |
| 68 | Francesco Melandri | Sean Creech Motorsport | 0 | 3 | Bronze | 3,075 |
| 69 | Keith Grant | JDC MotorSports | 0 | 8 | Bronze | 3,032 |
| 70 | Jason Rabe | Forty7 Motorsports | 0 | 1 | Bronze | 3,003 |
| 71 | Eric Palmer | Jr III Racing | 0 | 0 | Silver | 2,970 |
| 72 | John Saurino | OPHANIM MOTORSPORTS | 0 | 0 | Bronze | 2,935 |
| 73 | Ken D'Arcy | Jr III Racing | 0 | 0 | Bronze | 2,887 |
| 74 | Danny Kok | Conquest Racing | 1 | 0 | Bronze | 2,865 |
| 75 | Greg Palmer | Jr III Racing | 0 | 0 | Bronze | 2,828 |
| 76 | Josh Saurino | OPHANIM MOTORSPORTS | 0 | 0 | Silver | 2,820 |
| 77 | Dario Cangialosi | Forty7 Motorsports | 0 | 0 | Silver | 2,796 |
| 78 | Indy Al Miller | One Motorsports | 0 | 0 | Bronze | 2,771 |
| 79 | James French | Conquest Racing / JMF Motorsports | 1 | 24 | Silver | 2,749 |
| 80 | Robert Mau | Performance Tech Motorsports | 0 | 1 | Bronze | 2,721 |
| 81 | Hans Saurino | OPHANIM MOTORSPORTS | 0 | 0 | Silver | 2,657 |
| 82 | Nigel Saurino | OPHANIM MOTORSPORTS | 0 | 0 | Silver | 2,655 |
| 83 | George Staikos | Conquest Racing | 1 | 0 | Bronze | 2,610 |
| 84 | Tony Ave | Ave Motorsports with GRS | 0 | 19 | Bronze | 2,387 |
| 85 | Hanna Zellers | Ave Motorsports with GRS | 0 | 0 | Silver | 2,375 |
| 86 | Tristan Herbert | Andretti Autosport | 0 | 5 | Bronze | 2,360 |
| 87 | Marc Sharinn | Jr III Racing | 0 | 0 | Bronze | 2,332 |
| 88 | Robert Iversen | One Motorsports | 0 | 1 | Bronze | 2,107 |
The IMSA Prototype Challenge ran single-seat LMP3 prototype sportscars in multi-class sprint racing, typically in support of the WeatherTech SportsCar Championship. The series is no longer active. Its field held established amateurs and early-career professionals, with a small handful of experienced drivers; the strongest contenders included George Kurtz, Nolan Siegel, and Gar Robinson. The series occupied the middle rung of IMSA's ladder, stronger than IMSA Mazda Prototype Lites and GT4 America but considerably weaker than the WeatherTech championship above it. Drivers typically arrived from IMSA's lower single-seater and club racing pipelines and moved on toward either the WeatherTech championship or international sportscar racing in the World Endurance Championship.