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 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 . Conor Daly was the only other driver to go out, but he did not complete a full timed lap. Most drivers did not participate due to persistent light rain throughout first practice.
Justin Marks was the fastest in the practice session with a time of 132.960 seconds and a speed of .
Matt Tifft scored the pole for the race with a time of 133.320 and a speed of .
Stage 1
Stage 2
Stage 3