| 10 | Taylor / Taylor / Angelelli | Chevrolet Corvette DP | No.10 Konica Minolta Corvette DP for Wayne Taylor | 1:39.1810 | 207.9562 | 200 |
| 5 | Barbosa / Fittipaldi / Bourdais | Chevrolet Corvette DP | Action Express Racing LLC | 1:39.3100 | 207.6859 | 224 |
| 60 | McMurry / Pew | Ligier JS P2 Honda | Michael Shank Racing w/Curb/Agajanian | 1:39.3420 | 207.6199 | 204 |
| 01 | Pruett / Hand / Kimball / Karam | Riley Mk XXVI Ford | Chip Ganassi Racing with Felix Sabates | 1:39.3970 | 207.5040 | 233 |
| 02 | Dixon / Kanaan / Larson / McMurray | Riley Mk XXVI Ford | Chip Ganassi Racing with Felix Sabates | 1:39.4060 | 207.4863 | 230 |
| 0 | Rojas / Legge / Chaves | DeltaWing DWC13 Elan | DeltaWing Racing | 1:39.4840 | 207.3237 | 115 |
| 90 | Westbrook / Valiante / Rockenfeller | Chevrolet Corvette DP | VisitFlorida.com Racing | 1:39.5310 | 207.2256 | 197 |
| 31 | Curran / Cameron / Papis / Keen | Chevrolet Corvette DP | Action Express Racing LLC | 1:39.9070 | 206.4451 | 206 |
| 7 | Hartley / Barrichello / Hunter-Reay / Graves / Mayer | Riley Mk XXVI BMW | Starworks Motorsport | 1:40.2010 | 205.8399 | 157 |
| 57 | Krohn / Pla / Jönsson / Brundle | Ligier JS P2 Judd | Krohn Racing | 1:40.3900 | 205.4521 | 262 |
| 2 | Brown / Fogarty / Van Overbeek | HPD ARX-04b Honda | Tequila Patron ESM | 1:40.6210 | 204.9805 | 166 |
| 66 | Gewirtz / Lewis / Kvamme | Riley Mk XXVI BMW | RG Racing | 1:41.3640 | 203.4774 | 194 |
| 54 | Bennett / Braun / Wilkins / Gue | Oreca FLM 09 | Core Autosport | 1:41.7690 | 202.6679 | 242 |
| 11 | Cumming / Hawksworth / Junqueira / Menezes | Oreca FLM 09 | RSR Racing | 1:41.8650 | 202.4780 | 206 |
| 07 | Miller / Long / Devlin / Tremblay | Mazda Prototype | SpeedSource | 1:42.1240 | 201.9630 | 164 |
| 8 | van der Zande / Schultis / Popow / Hedlund / Bernoldi | Oreca FLM 09 | Starworks Motorsport | 1:42.1460 | 201.9196 | 229 |
| 70 | Bomarito / Nunez / Tremblay | Mazda Prototype | SpeedSource | 1:42.8530 | 200.5323 | 172 |
| 16 | Mowlem / Papadopoulos / Drissi / Alder | Oreca FLM 09 | BAR1 Motorsports | 1:43.1430 | 199.9690 | 201 |
| 50 | Pace / Defoor / Hinton / Schroeder | Riley Mk XXVI BMW | Fifty Plus Racing Endures for a Cure/Highway | 1:43.3010 | 199.6633 | 86 |
| 61 | Plowman / Drumwright / Ducote / Ware | Oreca FLM 09 | BAR1 Motorsports | 1:43.3520 | 199.5635 | 203 |
| 52 | Guasch / Novich / Palmer / Kimber-Smith | Oreca FLM 09 | PR1 Mathiasen Motorsports | 1:43.3800 | 199.5104 | 207 |
| 85 | Goikhberg / Simpson / Mitchell | Oreca FLM 09 | JDC/Miller Motorsports | 1:43.5070 | 199.2658 | 171 |
| 38 | French / Mee / Vautier | Oreca FLM 09 | Performance Tech Motorsports | 1:43.5860 | 199.1129 | 152 |
| 912 | Bergmeister / Bamber / Makowiecki | Porsche 991 RSR | Porsche North America | 1:44.3160 | 197.7192 | 203 |
| 98 | Lamy / Lauda / Turner / Dalla Lana | Aston Martin V8 Vantage GTE | Aston Martin Racing | 1:44.4140 | 197.5341 | 227 |
| 911 | Tandy / Pilet / Lieb | Porsche 991 RSR | Porsche North America | 1:44.4860 | 197.3989 | 207 |
| 3 | Magnussen / Garcia / Briscoe | Chevrolet Corvette C7.R | Corvette Racing | 1:44.5000 | 197.3716 | 190 |
| 62 | Kaffer / Rigon | Ferrari 458 Italia | Risi Competizione | 1:44.6180 | 197.1495 | 163 |
| 25 | Farfus / Auberlen / Werner / Spengler | BMW Z4 GTE | BMW Team RLL | 1:44.7680 | 196.8662 | 234 |
| 17 | Henzler / Sellers / Long | Porsche 991 RSR | Falken Tire | 1:44.7790 | 196.8469 | 244 |
| 4 | Gavin / Milner / Pagenaud | Chevrolet Corvette C7.R | Corvette Racing | 1:44.7990 | 196.8083 | 209 |
| 51 | Perrodo / Collard / Vilander | Ferrari 458 Italia | AF Corse | 1:44.8410 | 196.7294 | 104 |
| 24 | Edwards / Luhr / Klingmann / Rahal | BMW Z4 GTE | BMW Team RLL | 1:45.0580 | 196.3239 | 229 |
| 33 | Keating / Bleekemolen / Carter | Dodge Viper SRT | Riley Motorsports | 1:46.9480 | 192.8541 | 150 |
| 93 | Carter / Keating | Dodge Viper SRT | Riley Motorsports | 1:47.2450 | 192.3198 | 182 |
| 58 | Snow / Eng / Heylen / Dempsey | Porsche 991 GT America | Wright Motorsports | 1:47.4330 | 191.9835 | 185 |
| 28 | Bachler / Zöchling / Engelhart / Willsey | Porsche 991 GT America | Konrad Motorsport | 1:47.4950 | 191.8724 | 202 |
| 81 | Faulkner / Giermaziak / Skeen / Butcher / Avenatti | Porsche 991 GT America | GB Autosport | 1:47.5240 | 191.8209 | 162 |
| 007 | Davison / Nielsen / Nygaard / Davis | Aston Martin V12 Vantage | TRG-AMR | 1:47.5290 | 191.8113 | 153 |
| 22 | MacNeil / Keen / Davis / Van Gisbergen | Porsche 991 GT America | Alex Job Racing | 1:47.5810 | 191.7195 | 224 |
| 45 | Winkelhock / Thorne / Hoshino / Fujii | Audi R8 LMS | Flying Lizard Motorsports | 1:47.5810 | 191.7195 | 218 |
| 48 | Haase / Miller / von Moltke / Rast | Audi R8 LMS | Paul Miller Racing | 1:47.6690 | 191.5618 | 214 |
| 009 | DeBoer / Doyle | Aston Martin V12 Vantage | TRG-AMR | 1:47.7030 | 191.5023 | 182 |
| 49 | Lathouras / Aguas / Rugolo | Ferrari 458 Italia | AF Corse | 1:47.7400 | 191.4363 | 215 |
| 64 | Longo / Serra | Ferrari 458 Italia | Scuderia Corsa | 1:47.9010 | 191.1514 | 195 |
| 44 | Potter / Lally / Seefried | Porsche 991 GT America | Magnus Racing LLC | 1:47.9430 | 191.0758 | 179 |
| 23 | James / Riberas / Farnbacher | Porsche 991 GT America | Team Seattle/Alex Job Racing | 1:47.9700 | 191.0291 | 157 |
| 73 | | Porsche 991 GT America | Park Place Motorsports | 1:48.1250 | 190.7539 | 148 |
| 63 | Sweedler / Bell / Lazzaro / Segal | Ferrari 458 Italia | Scuderia Corsa | 1:48.1560 | 190.7008 | 155 |
| 19 | Michaelian / Basseng / Beretta / O'Young / De Phillippi | Porsche 991 GT America | Muehlner Motorsports America | 1:48.8110 | 189.5518 | 117 |
| 97 | | BMW Z4 | Turner Motorsport | 1:55.5600 | 178.4811 | 37 |
| 18 | Michaelian / Basseng / Beretta / O'Young / De Phillippi | Porsche 991 GT America | Muehlner Motorsports America | 2:04.3350 | 165.8847 | 14 |