Lap 479 - 15:41:27 (3:51 AM) - The No. 02 Lexus moves up to second after passing the No. 23 Porsche. The No. 11 BMW is going behind the wall, returning with Kyle Petty behind the wheel. The No. 23 Porsche is out of the pits and back on track.

Lap 480 - 15:43:45 (3:54 AM) - The No. 5 Ford pits and Matthews gets in.

Lap 482 - 15:49:14 (3:59 AM) - The No. 7 Pontiac pits and Dario Franchitti gets in. The No. 60 Lexus pits and Allmendinger gets in. The No. 17 Porsche pits and Sellers gets in. The No. 39 Lexus pits and Cheever gets in the car.

Lap 483 - 15:50:55 (4:00 AM) - The No. 80 Porsche is leaving the garage. The No. 67 Porsche is leaving the garage. The No. 05 BMW pits and Auberlen gets in. The No. 83 Porsche pits and Ehret gets behind the wheel. The No. 06 Corvette pits and Archer gets in.

Lap 484 - 15:57:00 (4:07 AM) - The No. 81 Porsche leaves the garage and rejoins the field. The No. 66 Porsche pits and Sauvage gets in the car.

Lap 485 - 16:01:20 (4:11 AM) - GREEN FLAG waves to resume the race. At just over the 16-hour mark in the race, the tightest on-track battle for the overall lead is taking place between the No. 01 Lexus, the No. 23 Porsche and the No. 02 Lexus. The No. 01 Lexus holds the position.

Lap 487 - 16:05:31 (4:16 AM) - OVERALL LEAD CHANGE: The No. 23 Porsche passes the No. 01 Lexus for the overall lead. In GT, the No. 36 Porsche is leading the No. 65 Pontiac by over a lap.

Lap 491 - 16:10:48 (4:21 AM) - The No. 4 Pontiac leaves pit road and goes to its garage.

Lap 491 - 16:11:46 (4:22 AM) - The No. 23 Porsche has opened over a five-second lead on the No. 01 Lexus and No. 02 Lexus.

Lap 492 - 16:12:42 (4:23 AM) - The No. 11 BMW has retired with oil pressure problems.

Lap 495 - 16:18:59 (4:29 AM) - The No. 75 Pontiac heads down pit road and back to its garage.

Lap 498 - 16:23:04 (4:33 AM) - The No. 43 Porsche rejoins the field with Michaelian behind the wheel.

Lap 499 - 16:26:00 (4:36 AM) - The No. 28 Ford spins in Turn 2 and continues.

Lap 502 - 16:30:25 (4:40 AM) - The No. 99 Pontiac misses the chicane, and is penalized a "stop and go."

Lap 502 - 16:31:32 (4:42 AM) - The No. 75 Pontiac re-joins the field with Braun driving.

Lap 506 - 16:37:32 (4:48 AM) - Espenlaub gets in the No. 74 Porsche after a pit stop.

Lap 510 - 16:44:54 (4:55 AM) - The No. 00 Porsche pits and Lewis Jr. gets in.

Lap 510 - 16:45:20 (4:55 AM) - The No. 23 Porsche has opened up over a 20-second lead on the rest of the field, 21.838 seconds ahead of the second-place No. 01 Lexus. The No. 3 BMW makes a routine pit stop and Szekeres gets in.

Lap 513 - 16:47:12 (4:57 AM) - The No. 01 Lexus leaves the track and heads back to its garage, giving the second spot overall to the No. 02 Lexus. The No. 17 Porsche makes contact with the wall near the chicane but continues to its garage.