The 2018 Iowa 250 presented by Enogen was the 14th stock car race of the 2018 NASCAR Xfinity Series season and the 8th iteration of the event.

It has over 25,000 permanent seats as well as a unique multi-tiered Recreational Vehicle viewing area along the backstretch.

[2] Christopher Bell of Joe Gibbs Racing would set the fastest time in the session, with a lap of 24.270 and an average speed of 129.790 miles per hour (208.877 km/h).

[3] The second and final practice session, sometimes referred to as Happy Hour, was held on Saturday, June 16, at 4:40 PM CST, and would last for 50 minutes.

[2] Kaz Grala of Fury Race Cars would set the fastest time in the session, with a lap of 24.221 and an average speed of 130.052 miles per hour (209.298 km/h).