| No. | Class | Team | Drivers | Car | |
|---|---|---|---|---|---|
| 1 | 01 | DP | Chip Ganassi Racing with Felix Sabates | Scott Dixon Charlie Kimball Juan Pablo Montoya Scott Pruett Memo Rojas | Riley BMW |
| 2 | 02 | DP | Chip Ganassi Racing with Felix Sabates | Scott Dixon Dario Franchitti Joey Hand Jamie McMurray Scott Pruett | Riley BMW |
| 3 | 2 | DP | Starworks Motorsport | Sebastien Bourdais Ryan Dalziel Allan McNish Alex Popow | Riley Ford |
| 4 | 3 | DP | 8 Star Motorsports | Anthony Davidson Pedro Lamy Nic Minassian Enzo Potolicchio Stéphane Sarrazin | Corvette DP |
| 5 | 5 | DP | Action Express Racing | João Barbosa Christian Fittipaldi Brian Frisselle Felipe Nasr Nelson Piquet Jr | Corvette DP |
| 6 | 6 | DP | Michael Shank Racing | Chris Cumming Jorge Goncalvez Michael Valiante Gustavo Yacaman | Riley Ford |
| 7 | 8 | DP | Starworks Motorsport | Ivan Bellarosa Scott Mayer Gaetano Ardagna Perez Jan Charouz Brendon Hartley | Riley Ford |
| 8 | 9 | DP | Action Express Racing | João Barbosa Christian Fittipaldi Burt Frisselle Mike Rockenfeller | Corvette DP |
| 9 | 10 | DP | Wayne Taylor Racing | Max Angelelli Ryan Hunter-Reay Jordan Taylor | Corvette DP |
| 10 | 27 | DP | BTE Sport | Emmanuel Anassis Anthony Massari Doug Peterson | Riley Ford |
| 11 | 42 | DP | Team Sahlen | Dane Cameron Wayne Nonnamaker Simon Pagenaud | Riley BMW |
| 12 | 43 | DP | Team Sahlen | Joe Nonnamaker Will Nonnamaker Joe Sahlen | Riley BMW |
| 13 | 50 | DP | Highway to Help | Frank Beck Carlos de Quesada Byron Defoor Ian James Jim Pace | Riley BMW |
| 14 | 60 | DP | Michael Shank Racing | AJ Allmendinger Marcos Ambrose Ozz Negri Jr John Pew Justin Wilson | Riley Ford |
| 15 | 77 | DP | Doran Racing | Jon Bennett Colin Braun Jim Lowe Paul Tracy | Dallara Ford |
| 16 | 90 | DP | Spirit of Daytona Racing | Antonio Garcia Oliver Gavin Ricky Taylor Richard Westbrook | Corvette DP |
| 17 | 99 | DP | GAINSCO/Bob Stallings Racing | Jon Fogarty Memo Gidley Alex Gurney Darren Law | Corvette DP |
| 18 | 03 | GT | Extreme Speed Motorsports | Ed Brown Mike Hedlund Scott Sharp Johannes van Overbeek | Ferrari 458 |
| 19 | 13 | GT | Audi Sport Customer Racing/Rum Bum Racing | Frank Biela Christopher Haase Matt Plumb Markus Winkelhock | Audi R8 Grand-Am |
| 20 | 17 | GT | Burtin Racing with Goldcrest Motorsports | Jack Baldwin Claudio Burtin Mario Farnbacher Martin Ragginger Robert Renauer | Porsche GT3 |
| 21 | 18 | GT | Mühlner Motorsports America | Mark Thomas Norbert Seidler Kevin Estre | Porsche GT3 |
| 22 | 19 | GT | Mühlner Motorsports America | Mark Thomas Eliseo Salazar Eduardo Costabal Ollie Hancock Kevin Roush | Porsche GT3 |
| 23 | 20 | GT | Dener Motorsport | Nono Figueiredo Constantino Junior Clemente Lunardi Ricardo Mauricio Marcel Visconde | Porsche GT3 |
| 24 | 21 | GT | Dener Motorsport | Rubens Barrichelo Nono Figueiredo Felipe Giaffone Tony Kanaan Ricardo Mauricio | Porsche GT3 |
| 25 | 23 | GT | Alex Job Racing | Jeroen Bleekemolen Damien Faulkner Marco Holzer Cooper MacNeil | Porsche GT3 |
| 26 | 24 | GT | Audi Sport Customer Racing/AJR | Filipe Albuquerque Oliver Jarvis Edoardo Mortara Dion von Moltke | Audi R8 Grand-Am |
| 27 | 30 | GT | MOMO/NGT Motorsport | Henrique Cisneros Sean Edwards Kuba Giermaziak Patrick Pilet | Porsche GT3 |
| 28 | 31 | GT | Marsh Racing | Lawson Aschenbach Eric Curran Brandon Davis Boris Said | Corvette |
| 29 | 32 | GT | Konrad Motorsport/Orbit | Michael Christensen Christian Englehart Nick Tandy Lance Willsey | Porsche GT3 |
| 30 | 44 | GT | Magnus Racing | Nicolas Armindo Andy Lally Richard Lietz John Potter | Porsche GT3 |
| 31 | 45 | GT | Magnus Racing | Mark Boden Al Carter Charles Espenlaub Hugh Plumb Charles Putman | Porsche GT3 |
| 32 | 51 | GT | APR Motorsport | Matt Bell David Empringham John Farano Alex Figge Dave Lacey | Audi R8 Grand-Am |
| 33 | 52 | GT | Audi Sport Customer Racing/APR Motorsport | Ian Baas Marc Basseng René Rast Frank Stippler | Audi R8 Grand-Am |
| 35 | 56 | GT | AF-Waltrip | Rui Aguas Clint Bowyer Robert Kauffman Michael Waltrip | Ferrari 458 |
| 36 | 57 | GT | Stevenson Motorsports | John Edwards Robin Liddell Jan Magnussen Tom Milner | Camaro GT.R |
| 37 | 59 | GT | Brumos Racing | Andrew Davis Leh Keen Marc Lieb Bryan Sellers | Porsche GT3 |
| 38 | 61 | GT | R.Ferri/AIM Motorsport Racing with Ferrari | Giancarlo Fisichella Max Papis Jeff Segal Toni Vilander | Ferrari 458 |
| 39 | 62 | GT | Snow Racing/Wright Motorsports | Klaus Bachler Sascha Maassen Marco Seefried Madison Snow Melanie Snow | Porsche GT3 |
| 40 | 63 | GT | Scuderia Corsa | Alessandro Balzan Marco Frezza Alessandro Pier Guidi | Ferrari 458 |
| 41 | 64 | GT | Scuderia Corsa | Chico Longo Rafa Matos Xandinho Negrao Daniel Serra | Ferrari 458 |
| 42 | 66 | GT | TRG | Jörg Bergmeister Dominik Farnbacher Ben Keating Kuno Wittmer | Porsche GT3 |
| 43 | 67 | GT | TRG | Manu Collard Romain Dumas Nic Jonsson Tracy Krohn | Porsche GT3 |
| 44 | 68 | GT | TRG | Ivo Breukers Brad Lewis Jim Michaelian Ronald van de Laar | Porsche GT3 |
| 45 | 69 | GT | AIM Autosport Team FXDD with Ferrari | Emil Assentato Guy Cosmo Anthony Lazzaro Nick Longhi Mark Wilkins | Ferrari 458 |
| 46 | 72 | GT | Park Place Motorsports | Chuck Cole JF Dumoulin Grant Phipps Mike Skeen Mike Vess | Porsche GT3 |
| 47 | 73 | GT | Park Place Motorsports | Daniel Graeff Jason Hart Patrick Lindsey Pat Long Spencer Pumpelly | Porsche GT3 |
| 49 | 78 | GT | Racers Edge motorsports | Rudy Camarillo Martin Fuentes Carlos Peralta Ricardo Perez De Lara | Mazda RX-8 |
| 50 | 80 | GT | TruSpeed Motorsports | Kelly Collins Phil Fogg Tom Haacker Jim Walsh | Porsche GT3 |
| 51 | 87 | GT | Racers Edge Motorsports | Tony Ave Jan Heylen Doug Peterson | Dodge Viper |
| 52 | 93 | GT | Turner Motorsport | Bill Auberlen Michael Marsal Maxime Martin Andy Priaulx Gunter Schaldach | BMW M3 |
| 53 | 94 | GT | Turner Motorsport | Bill Auberlen Paul Dalla Lana Billy Johnson Maxime Martin Boris Said | BMW M3 |
| 54 | 00 | GX | Visit Florida Racing/ SpeedSource/ Yellow Dragon Motorsports | Joel Miller Tristan Nunez Spencer Pigot Yojiro Terada Tristan Vautier | Mazda6 GX (Prep 2) |
| 55 | 16 | GX | Napleton Racing | Nelson Canache David Donohue Shane Lewis Jim Norman | Porsche Cayman (Prep 1) |
| 56 | 22 | GX | Bullet Racing | James Clay Darryl O'Young Daniel Rogers Seth Thomas Karl Thomson | Porsche Cayman (Prep 1) |
| 57 | 25 | GX | Freedom Autosport/SpeedSource | Andrew Carbonell Tom Long Rhett O'Doski Derek Whitis | Mazda6 GX (Prep 2) |
| 58 | 38 | GX | BGB Motorsports | Lee Davis Ryan Eversley Eric Foss Jeff Mosing John Tecce | Porsche Cayman (Prep 1) |
| 59 | 70 | GX | Mazdaspeed/SpeedSource | Jonathan Bomarito Marino Franchitti James Hinchcliffe Sylvain Tremblay | Mazda6 GX (Prep 2) |
