Tyler Reddick and Justin Marks turned the fastest lap in the two practice sessions planned on Friday, Aug. 24.
The first session was plagued by weather. Only two cars turned a lap during the session, with Reddick being the fastest. XFINITY Series rookie and IndyCar regular Conor Daly was the other driver to turn a lap during the session.
A drier second session resulted in 39 of the 40 entered cars turning a lap. Justin Marks ran the fastest lap during the final session, which was led by the last road course winner Justin Allgaier until Marks turned a faster lap with less than 10 minutes remaining.
IndyCar driver James Davison finished the session in second, while Austin Cindric, Justin Allgaier and Matt Tifft rounded out the top five.
Cole Custer finished sixth, while Andy Lally, Elliott Sadler, Daniel Hemric, and Christopher Bell rounded out the top 10.
The Johnsonville 180 is slated to kick off on Saturday, August 25 at 3 p.m. ET. Qualifying is at 12:35 p.m. ET, with both events on NBCSN.