Below are some potential notable starts being made by drivers this weekend. Notable meaning they will be tied with a driver in number of starts made in that specific series, or the number of starts being made is a significant number that they are reaching in their specific race this weekend at Iowa Speedway. Rankings reflect the all-time starts list for that series.
(The image above each series is the driver I find having the most notable start this weekend)
*This will be updated after qualifying for each race if a driver does not make the race.

This weekend at Iowa Josh Bilicki will make his 150th career O’Reilly Series start. Image credit: @SSGLR0708 X Page
O’Reilly Auto Parts Series Starts
Garrett Smithley: 219th start ties Brendan Gaughan, ranks 60th
Brennan Poole: 213th start ties Blake Koch, ranks 63rd
Austin Hill: 169th start ties Alex Labbe, ranks 99th
Josh Bilicki: 150th start! Ranks 113th
Blaine Perkins, Harrison Burton & Sammy Smith: 131st start ties A.J. Allmendinger, ranks 134th
Jesse Love: 89th start ties Chase Elliott & Daniel Suarez, ranks 198th
Carson Kvapil: 65th start ties Ryan Newman, ranks 246th
William Sawalich: 57th start ties Alex Bowman & Ernie Irvan, ranks 263rd
Rajah Caruth: 45th start ties Connor Zilisch, ranks 306th
Lavar Scott: 25th start! Ranks 405th
Carson Brown & Derek Lemke: 1st start!

Michael McDowell makes his 560th career Cup Series start this weekend at Iowa which ties him with NASCAR Legend, Cale Yarborough for 39th most all-time. Image credit: @SpireMotorsport X Page
Cup Series Starts
Michael McDowell: 560th start ties Cale Yarborough, ranks 39th
Ricky Stenhouse Jr.: 495th start ties Wendell Scott, ranks 51st
Kyle Larson: 425th start! Ranks 68th
Daniel Suarez: 346th start ties Reed Sorenson, ranks 88th
Tyler Reddick: 241st start ties Todd Bodine, ranks 127th
Chase Briscoe: 203rd start ties Phil Parsons, ranks 149th
Ty Gibbs: 146th start ties Timmy Hill, ranks 192nd
Riley Herbst: 67th start ties Brendan Gaughan, ranks 289th