2018 6 Hours of The Glen

The 2018 Sahlen's 6 Hours of the Glen was the sixth of twelve scheduled sports car races of 2018 by IMSA, and was the third round of the Patron North American Endurance Cup.

[2] With 121 points, the GTLM Drivers' Championship was led by Ryan Briscoe and Richard Westbrook with a seven-point advantage over Earl Bamber and Laurens Vanthoor.

The second technical bulletin was released on June 21, 2018, which regarded the Balance of Performance in the Prototype (P) and GT Daytona (GTD) classes for the event.

Performance Tech Motorsports returned after skipping the Belle Isle round.Gabby Chaves subbed for João Barbosa, who was injured, in the Mustang Sampling Racing #5.

[9] Bill Auberlen returned to the BMW Team RLL #25 entry after contesting the 2 previous rounds in GTD with Turner Motorsport.

In GTD, HART, Montaplast by Land-Motorsport, CJ Wilson Racing, P1 Motorsports, and Squadra Corse Garage Italia made their first appearances since Sebring.

[14] The first practice session took place at 10:25 am ET on Friday and ended with Dane Cameron topping the charts for Acura Team Penske, with a lap time of 1:33.562.

[15] The second practice session took place at 2:50 pm ET on Friday and ended with Romain Dumas topping the charts for CORE Autosport, with a lap time of 1:33.481.

[17] The third and final practice session took place at 8:00 am ET on Saturday and ended with Dane Cameron topping the charts for Acura Team Penske, with a lap time of 1:32.975.

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.