2018 Monterey Grand Prix

[3] With 269 points, the GTLM Drivers' Championship was led by Antonio García and Jan Magnussen with a four-point advantage over Ryan Briscoe and Richard Westbrook.

[4] The Oreca 07, Ligier JS P217, Dallara P217, and Riley-Multimatic MkXXX were given a 10 kilogram weight increase and a fuel capacity reduction of 3 liters.

[7] In GTD, Park Place Motorsports and Squadra Corse Garage Italia returned after skipping the Virginia International Raceway event.

[9] The first practice session took place at 10:55 am PT on Friday and ended with Renger van der Zande topping the charts for Wayne Taylor Racing, with a lap time of 1:16.832.

[10] The second practice session took place at 3:15 pm PT on Friday and ended with Dane Cameron topping the charts for Acura Team Penske, with a lap time of 1:16.865.

[12] The third and final practice session took place at 8:30 am PT on Saturday and ended with Renger van der Zande topping the charts for Wayne Taylor Racing, with a lap time of 1:16.605.

The competitors' fastest lap times determined the starting order with the grid arranged to put the Prototype and GTLM cars ahead of all GTD entries.

Juan Pablo Montoya Tristan Nunez Tommy Milner Patrick Lindsey Gunnar Jeannette Frankie Montecalvo Kyle Marcelli