Christian Fittipaldi started on pole in the #5 Action Express Corvette DP, with Ricky Taylor (#10 Wayne Taylor Racing Corvette DP) next door. Tom Long put the #70 SpeedSource Mazda on the grid in third. Porsche North America 911s started 2-3 in GT Le Mans (GTLM), #912 Earl Bamber in front of #911 Patrick Pilet, with Bill Auberlen leading the class in the #25 BMW Team RLL M6.
Taylor passed Fittipaldi through the first series of turns, with Long moving into second a couple of corners later. Bamber and Pilet passed Auberlen in Turn 8 with 1 hr 23 min left in the 1:40 race. Fittipaldi passed Long in the hairpin to retake second overall at 1:13. Eric Curran (#31 Action Express) took third overall a few minutes later.
Auberlen got a drive-through penalty with 1 hr left in the race for colliding with a Prototype Challenge (PC) car, moving Bamber to the lead and Pilet to second. The #912 pitted with 57 min to go, the #911 having come in the previous lap. Tandy was penalized with a drive-through for speeding down pit lane after getting behind the wheel in the #911. The #912 received the same penalty
The #10 and #5 pitted at the same time with 52 min left, leaving the #70 Mazda in the lead but still having to pit. The #70 came in at the 48 min mark, with Joel Miller taking over. The Mazda returned to competition in fourth behind Jordan Taylor in the #10, Joao Barbosa in the #5, and Dane Cameron in the #31. Tommy Milner (#4 Corvette) led teammate Antonio Garcia (#3) and Frederic Makowiecki (#912 Porsche) in GTLM. The #4, however, was off sequence pit-wise, having stopped early to change a flat left-front.
One of the PC competitors brought out the race’s first full-course caution following a failure in the left-rear suspension. The cars were circulating under yellow with 28 min to go, opening up the possibility that the #4 would try to make it to the end on fuel. Green-flag action resumed with 22 min left.
The #912 turned the #4 at the hairpin with 2 min left, the #911 taking the lead and the #62 Risi Competitizione Ferrari 488 driven by Toni Vilander moving up to third behind the Corvette. The overall Top 3 remained #10, #5, and #31, all Corvette DPs.