The 2018 Johnsonville 180 was a NASCAR Xfinity Series race held on August 25, 2018 at Road America in Elkhart Lake, Wisconsin.

Contested over 45 laps on the 4.048-mile (6.515 km) road course, it was the 23rd race of the 2018 NASCAR Xfinity Series season.

Tyler Reddick led first practice with a fastest lap of 158.280 seconds and a speed of 92.070 mph (148.172 km/h).

[4] Justin Marks was the fastest in the practice session with a time of 132.960 seconds and a speed of 109.603 mph (176.389 km/h).

[5] Matt Tifft scored the pole for the race with a time of 133.320 and a speed of 109.307 mph (175.913 km/h).