| | 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 | 42 | DP | Team Sahlen | Dane Cameron
Wayne Nonnamaker
Simon Pagenaud | Riley BMW |
| 4 | 6 | DP | Michael Shank Racing | Chris Cumming
Jorge Goncalvez
Michael Valiante
Gustavo Yacaman | Riley Ford |
| 5 | 90 | DP | Spirit of Daytona Racing | Antonio Garcia
Oliver Gavin
Ricky Taylor
Richard Westbrook | Corvette DP |
| 6 | 60 | DP | Michael Shank Racing | AJ Allmendinger
Marcos Ambrose
Ozz Negri Jr
John Pew
Justin Wilson | Riley Ford |
| 7 | 2 | DP | Starworks Motorsport | Sebastien Bourdais
Ryan Dalziel
Allan McNish
Alex Popow | Riley Ford |
| 8 | 99 | DP | GAINSCO/Bob Stallings Racing | Jon Fogarty
Memo Gidley
Alex Gurney
Darren Law | Corvette DP |
| 9 | 3 | DP | 8 Star Motorsports | Anthony Davidson
Pedro Lamy
Nic Minassian
Enzo Potolicchio
Stéphane Sarrazin | Corvette DP |
| 10 | 50 | DP | Highway to Help | Frank Beck
Carlos de Quesada
Byron Defoor
Ian James
Jim Pace | Riley BMW |
| 11 | 5 | DP | Action Express Racing | João Barbosa
Christian Fittipaldi
Brian Frisselle
Felipe Nasr
Nelson Piquet Jr | Corvette DP |
| 12 | 10 | DP | Wayne Taylor Racing | Max Angelelli
Ryan Hunter-Reay
Jordan Taylor | Corvette DP |
| 13 | 9 | DP | Action Express Racing | João Barbosa
Christian Fittipaldi
Burt Frisselle
Mike Rockenfeller | Corvette DP |
| 14 | 77 | DP | Doran Racing | Jon Bennett
Colin Braun
Jim Lowe
Paul Tracy | Dallara Ford |
| 15 | 8 | DP | Starworks Motorsport | Ivan Bellarosa
Scott Mayer
Gaetano Ardagna Perez
Jan Charouz
Brendon Hartley | Riley Ford |
| 16 | 43 | DP | Team Sahlen | Joe Nonnamaker
Will Nonnamaker
Joe Sahlen
Bruno Junqueria | Riley BMW |
| 17 | 32 | GT | Konrad Motorsport/Orbit | Michael Christensen
Christian Englehart
Nick Tandy
Lance Willsey | Porsche GT3 |
| 18 | 44 | GT | Magnus Racing | Nicolas Armindo
Andy Lally
Richard Lietz
John Potter | Porsche GT3 |
| 19 | 30 | GT | MOMO/NGT Motorsport | Henrique Cisneros
Sean Edwards
Kuba Giermaziak
Patrick Pilet | Porsche GT3 |
| 20 | 73 | GT | Park Place Motorsports | Daniel Graeff
Jason Hart
Patrick Lindsey
Pat Long
Spencer Pumpelly | Porsche GT3 |
| 21 | 63 | GT | Scuderia Corsa | Olivier Beretta
Alessandro Balzan
Marco Frezza
Alessandro Pier Guidi | Ferrari 458 |
| 22 | 24 | GT | Audi Sport Customer Racing/AJR | Filipe Albuquerque
Oliver Jarvis
Edoardo Mortara
Dion von Moltke | Audi R8 Grand-Am |
| 23 | 62 | GT | Snow Racing/Wright Motorsports | Klaus Bachler
Sascha Maassen
Marco Seefried
Madison Snow
Melanie Snow | Porsche GT3 |
| 24 | 57 | GT | Stevenson Motorsports | John Edwards
Robin Liddell
Jan Magnussen
Tom Milner | Camaro GT.R |
| 25 | 64 | GT | Scuderia Corsa | Chico Longo
Rafa Matos
Xandinho Negrao
Daniel Serra | Ferrari 458 |
| 26 | 69 | GT | AIM Autosport Team FXDD
with Ferrari | Emil Assentato
Guy Cosmo
Anthony Lazzaro
Nick Longhi | Ferrari 458 |
| 27 | 52 | GT | Audi Sport Customer Racing/
APR Motorsport | Ian Baas
Marc Basseng
René Rast
Frank Stippler | Audi R8 Grand-Am |
| 28 | 61 | GT | R.Ferri/AIM Motorsport Racing
with Ferrari | Giancarlo Fisichella
Max Papis
Jeff Segal
Toni Vilander | Ferrari 458 |
| 29 | 66 | GT | TRG | Jörg Bergmeister
Dominik Farnbacher
Ben Keating
Kuno Wittmer | Porsche GT3 |
| 30 | 59 | GT | Brumos Racing | Andrew Davis
Leh Keen
Marc Lieb
Bryan Sellers | Porsche GT3 |
| 31 | 23 | GT | Alex Job Racing | Jeroen Bleekemolen
Damien Faulkner
Marco Holzer
Cooper MacNeil | Porsche GT3 |
| 32 | 13 | GT | Audi Sport Customer Racing/
Rum Bum Racing | Frank Biela
Christopher Haase
Matt Plumb
Markus Winkelhock | Audi R8 Grand-Am |
| 33 | 56 | GT | AF-Waltrip | Rui Aguas
Clint Bowyer
Robert Kauffman
Michael Waltrip | Ferrari 458 |
| 34 | 93 | GT | Turner Motorsport | Bill Auberlen
Michael Marsal
Maxime Martin
Andy Priaulx
Gunter Schaldach | BMW M3 (Withdrawn) |
| 35 | 45 | GT | Magnus Racing | Mark Boden
Al Carter
Charles Espenlaub
Hugh Plumb
Charles Putman | Porsche GT3 |
| 36 | 67 | GT | TRG | Manu Collard
Romain Dumas
Nic Jonsson
Tracy Krohn | Porsche GT3 |
| 37 | 87 | GT | Racers Edge Motorsports | Tony Ave
Jan Heylen
Doug Peterson | Dodge Viper |
| 38 | 94 | GT | Turner Motorsport | Bill Auberlen
Paul Dalla Lana
Billy Johnson
Maxime Martin
Boris Said | BMW M3 |
| 39 | 31 | GT | Marsh Racing | Lawson Aschenbach
Eric Curran
Brandon Davis
Boris Said | Corvette |
| 40 | 18 | GT | Mühlner Motorsports America | Mark Thomas
Norbert Seidler
Kevin Estre | Porsche GT3 |
| 41 | 21 | GT | Dener Motorsport | Rubens Barrichelo
Nono Figueiredo
Felipe Giaffone
Tony Kanaan
Ricardo Mauricio | Porsche GT3 |
| 42 | 03 | GT | Extreme Speed Motorsports | Ed Brown
Mike Hedlund
Scott Sharp
Johannes van Overbeek | Ferrari 458 |
| 43 | 51 | GT | APR Motorsport | Matt Bell
David Empringham
John Farano
Alex Figge
Dave Lacey | Audi R8 Grand-Am |
| 44 | 80 | GT | TruSpeed Motorsports | Kelly Collins
Phil Fogg
Tom Haacker
Jim Walsh | Porsche GT3 |
| 45 | 20 | GT | Dener Motorsport | Nono Figueiredo
Constantino Junior
Clemente Lunardi
Ricardo Mauricio
Marcel Visconde | Porsche GT3 |
| 46 | 72 | GT | Park Place Motorsports | Chuck Cole
Grant Phipps
Mike Vess
Alex Whitman
JF Dumoulin | Porsche GT3 |
| 47 | 68 | GT | TRG | Brad Lewis
Jim Michaelian
Ronald van de Laar
Ivo Breukers | Porsche GT3 |
| 48 | 17 | GT | Burtin Racing with
Goldcrest Motorsports | Jack Baldwin
Claudio Burtin
Mario Farnbacher
Martin Ragginger
Robert Renauer | Porsche GT3 |
| 49 | 19 | GT | Mühlner Motorsports America | Mark Thomas
Eliseo Salazar
Eduardo Costabal
Ollie Hancock
Kevin Roush | Porsche GT3 |
| 50 | 78 | GT | Racers Edge motorsports | Rudy Camarillo
Martin Fuentes
Carlos Peralta
Ricardo Perez De Lara | Mazda RX-8 |
| 51 | 16 | GX | Napleton Racing | Nelson Canache
David Donohue
Shane Lewis
Jim Norman | Porsche Cayman (Prep 1) |
| 52 | 38 | GX | BGB Motorsports | Lee Davis
Ryan Eversley
Eric Foss
Jeff Mosing | Porsche Cayman (Prep 1) |
| 53 | 25 | GX | Freedom Autosport/SpeedSource | Andrew Carbonell
Tom Long
Rhett O'Doski
Derek Whitis | Mazda6 GX (Prep 2) |
| 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 | 70 | GX | Mazdaspeed/SpeedSource | Jonathan Bomarito
Marino Franchitti
James Hinchcliffe
Sylvain Tremblay
Tom Long | Mazda6 GX (Prep 2) |
| 56 | 27 | DP | BTE Sport | Emmanuel Anassis
Anthony Massari
Doug Peterson | Riley Ford |
| 57 | 22 | GX | Bullet Racing | James Clay
Darryl O'Young
Daniel Rogers
Seth Thomas
Karl Thomson | Porsche Cayman (Prep 1) |
