NASCAR Live Race Updates: Iowa Corn 350 at Iowa Speedway
Welcome to the Racing America On SI Live Race Updates page for the 2025 NASCAR Cup Series Iowa Corn 350 Powered by Ethanol at Iowa Speedway.
Be sure to refresh this post throughout Sunday's event as the Live Race Updates story will be updated regularly with the biggest moments from the 306.25-mile race around the 0.875-mile short track, including lead changes, crash replays, the winner of the race, finishing results, and more.
Final Stage Updates
Lap 350: William Byron Wins!
William Byron was able to manage the fuel load, and he took home his second win of the season. His No. 24 car sputtered out of gas during his victory burnouts.
Iowa Corn 350 Race Results
Fin | Car | Driver | Laps | Diff |
|---|---|---|---|---|
1 | 24 | William Byron | 350 | -- |
2 | 19 | Chase Briscoe | 350 | 1.192 |
3 | 6 | Brad Keselowski | 350 | 1.378 |
4 | 12 | Ryan Blaney | 350 | 1.499 |
5 | 60 | Ryan Preece | 350 | 4.199 |
6 | 23 | Bubba Wallace | 350 | 5.490 |
7 | 48 | Alex Bowman | 350 | 6.763 |
8 | 77 | Carson Hocevar | 350 | 7.263 |
9 | 22 | Joey Logano | 350 | 7.465 |
10 | 3 | Austin Dillon | 350 | 7.681 |
Click here for the full Iowa Corn 350 Race Results.
Lap 346: Keselowski and Blaney Closing in On Briscoe For P2
As William Byron continues to lead, Brad Keselowski and Ryan Blaney have reeled in Chase Briscoe for the second position. This could be the battle for the win if Byron runs out of fuel.
Lap 319: Byron Leads, But Fuel Questions Remain
William Byron holds the lead over Chase Briscoe by 0.366 seconds with just over 30 laps to go, but the question is: does he have enough fuel to make it to the finish? We'll find out. We know Briscoe, Keselowski in third, and Ryan Preece in fourth have more than enough fuel.
Lap 289: Preece to Third!
Ryan Preece utilized the high line on this restart, and he was able to get around Alex Bowman for the third position on Lap 289.
Lap 287: Back to Green!
William Byron gets an excellent restart, and he has the lead over Alex Bowman and Chase Briscoe on this restart. Ryan Preece has moved past Brad Keselowski for the fourth position.
Lap 281: Caution
We're back under caution for the 12th time in the Iowa Corn 350, this time due to debris in the form of a side window from Todd Gilliland's No. 34 Ford, which has flown into the racing surface in Turn 3.
Lap 277: Back to Green!
William Byron takes the lead from Chase Elliott on this restart, but the question is how much fuel has he been able to save due to the rash of cautions we've had? There's a chance Byron, Bowman, and others could be good to go.
We'll see.
Lap 270: Back to Green!
With Austin Cindric pitting for the final time on the last caution, Chase Elliott leads the field to green. He leads a Hendrick trio at the front of the pack as William Byron and Alex Bowman are second and third. A lap into this restart, Ty Dillon goes for a spin through the frontstretch grass, and we're back under caution -- AGAIN.
Lap 262: Caution!
Shane van Gisbergen has gone for his second spin of the race, and we're back under caution for the 10th time. What started as a clean and green race in Stage 1 has become a caution-fest.
Lap 261: Back to Green!
Austin Cindric brings the field back to green, but as eyes are on the lead of the race, the battle for the win is likely going on far behind the leader, as Brad Keselowski and Ryan Preece, who may both be good to go on fuel, are fighting for the eighth spot.
Lap 253: Caution!
Tyler Reddick and Christopher Bell go for a spin in Turn 2 after Reddick received a tap from Chase Briscoe. The dual spin has brought out yet another caution. Austin Cindric leads over Chase Elliott, Josh Berry, Austin Dillon, and William Byron.
They saved it ... and then they didn't. pic.twitter.com/4C0kqmWwYr
— NASCAR (@NASCAR) August 3, 2025
Lap 250: Back to Green!
Austin Cindric leads the field to green, and he takes possession of the lead. Josh Berry and Austin Dillon are fighting for second place, and it looks like Berry will hold onto second.
Lap 243: Caution!
Erik Jones, who was running 19th, has been sent spinning on the frontstretch after contact from Chase Briscoe. Brad Keselowski narrowly avoided colliding with Jones' spinning No. 43 car. We're now under caution for the eighth time in the Iowa Corn 350.
Not clear! Not clear! pic.twitter.com/Bp8FN1mVbl
— NASCAR (@NASCAR) August 3, 2025
Lap 236: Back to Green!
Ryan Blaney and Austin Cindric lead the field back to green, and its Blaney, the defending winner of the Iowa Corn 350, who wins the battle up front between the Team Penske teammates.
Lap 232: Brad Keselowski Relinquishes Lead to Pit
Under the caution for a crash involving Zane Smith, Brad Keselowski and crew chief Jeremt Bullins have chosen to pit. They felt they were in a no-win situation despite being in the lead due to their fuel situation. Now, they're on the edge of potentially making it to the end of the race on fuel.
Lap 229: Caution!
Zane Smith has gotten turned after contact from Carson Hocevar in Turn 2 on Lap 229. The contact, which came as Hocevar got loose and collided with Smith, sent Smith backing into the outside wall. We're back under caution for the seventh time in this race.
Lap 228: Back to Green!
Brad Keselowski has full possession of the race lead once again after another great restart.
Lap 221: Caution!
In the midst of a four-wide battle at Iowa Speedway, which doesn't usually lead to good things, Denny Hamlin went spinning in Turn 4 after making contact with AJ Allmendinger. We're back under caution for the sixth time.
There's more trouble!
— NASCAR (@NASCAR) August 3, 2025
This time it's the No. 11! pic.twitter.com/yDC8ZhSJ8A
Lap 220: Back to Green!
Brad Keselowski leads the field back to green, and the final Stage of Sunday's race is underway. Ryan Blaney slots in second, and he has Austin Cindric and Ty Gibbs battling for P3 behind him.
Stage 2 Updates
Lap 210: Brad Keselowski Sweeps Stages 1 and 2
Brad Keselowski didn't have a Stage win in 2025 coming into Sunday's Iowa Corn 350. Now, he has two of them as he took the Stage 2 win over Ryan Blaney.
Stage 2 Results:
Fin | Car | Driver | Stage Points | Playoff Points |
|---|---|---|---|---|
1 | 6 | Brad Keselowski | 10 | 1 |
2 | 12 | Ryan Blaney | 9 | -- |
3 | 2 | Austin Cindric | 8 | -- |
4 | 54 | Ty Gibbs | 7 | -- |
5 | 8 | Kyle Busch | 6 | -- |
6 | 21 | Josh Berry | 5 | -- |
7 | 48 | Alex Bowman | 4 | -- |
8 | 43 | Erik Jones | 3 | -- |
9 | 60 | Ryan Preece | 2 | -- |
10 | 3 | Austin Dillon | 1 | -- |
Lap 209: Back to Green!
Brad Keselowski leads the field back to green, and Kyle Larson nearly crashes. He hangs on, and it looks like Brad Keselowski will sweep Stages 1 and 2. Carson Hocevar has spun out.
Lap 203: Caution!
Ty Dillon has spun after contact with Todd Gilliland, who got loose underneath him. Gilliland made contact, which sent Dillon spinning, and Dillon pounded the outside wall with the left rear of his race car.
Lap 195: Denny Hamlin Suffering From "Chattering"
Denny Hamlin has had a decently fast car, but the driver has suffered from rear tire chattering, which has caused him to break loose unexpectedly several times in this race. Hamlin radioed to his team saying his car is better overall, but his right rear tire keeps chattering. Hamlin runs 12th.
Lap 188: Keselowski Takes the Lead
Brad Keselowski dove it into Turns 1 and 2 and was able to pull off the pass of Ryan Blaney for the race lead on Lap 188.
Lap 186: Back to Green!
Ryan Blaney and Brad Keselowski lead the field back to the green flag on Lap 186. Keselowski is attempting to take the lead away on the inside line. Blaney charges back to the lead off of Turn 2, but they are still side-by-side on Lap 187.
Lap 180: Caution!
Cody Ware spins on the frontstretch and we're back under caution for the third time in Sunday's race. Ryan Blaney was the leader at the time of the caution, and will try to have a better restart against Keselowski on the next attempt.
Lap 177: Back to Green!
Ryan Blaney leads the field back to green, but he has a challenge on the inside from Brad Keselowski, who wants that lead back. They are still side-by-side more than a lap into this green flag run.
Lap 173: Ryan Blaney Wins Race Off Pit Road
Ryan Blaney has taken the lead of the race as his No. 12 Team Penske pit crew got him out of the pits ahead of Brad Keselowski. Austin Cindric, Ty Gibbs, and Josh Berry will be the remainder of the top-five drivers on this restart.
William Byron got the free pass and will lineup 15th. 16th through 27th were able to take the wave around to also get on the lead lap.
Lap 169: Caution!
Shane van Gisbergen has spun and backed into the outside wall in Turn 2 on Lap 169, which has brought out the first caution for cause in the Iowa Corn 350. With the green flag pit sequence not fully cycled out, this will shuffle up the running order of the race.
The No. 88 goes for a big slide in Turn 2! pic.twitter.com/xJXgzgIUvJ
— NASCAR (@NASCAR) August 3, 2025
Brad Keselowski remained on track and is the leader over Ryan Blaney, Austin Cindric, Ty Gibbs, and Josh Berry.
William Byron was the highest-running car that had pitted and will receive the free pass. Everyone else that had already pitted will have to rely on the wave around in order to try to get back into this race.
Lap 156: Chase Briscoe Relinquishes Lead to Pit
Chase Briscoe has made his green flag pit stop on Lap 156, which has handed the race lead to Brad Keselowski and the No. 6 RFK Racing team. Keselowski is locked in a battle with Ryan Blaney for the race lead.
With an estimated fuel window of 110 laps, and there being 140 laps in Stage 2, everyone will have to make a pit stop before the Stage is over.
Lap 140: Bubba Wallace Kicks Off Green Flag Pit Cycle
Bubba Wallace and his crew chief, Charles Denike, have chosen to kick off the round of green flag pit stops on Lap 140. Wallace was running around 10th when he came to pit road.
Lap 137: Keselowski Stalking Race Leader Briscoe In Lapped Traffic
In what seems like a replay of the opening Stage, Brad Keselowski has worked his way into the second position, and is stalking the race leader as the leader has gotten bogged down in lapped traffic. This time, Keselowski is chasing polesitter Chase Briscoe for the lead.
73 laps remain in Stage 2.
Lap 120: Byron, Reddick Reporting Brake Issues
William Byron and Tyler Reddick have both radioed to their teams frustration about their brakes in the early portion of this race. Byron, who runs fourth, says he is suffering from the same issues he had on Saturday, which is a pedal that keeps going to the floor no matter how much he pumps the brakes.
Reddick, on the other hand, has been feeling an annoying brake shake everytime he attempts to slow his race car. Reddick says the issue has been persistent all race long to this point. Reddick currently runs 22nd.
Lap 80: Back to Green!
Chase Briscoe leads the field back to the green flag, and he has possession of the race lead. William Byron and Ryan Blaney are battling for the runner-up spot behind him.
Chase Briscoe Wins Race Off Pit Road; Bowman, Preece Speeding
Chase Briscoe will resume the race in Stage 2 as the race leader, as he won the race off of pit road under the Stage Break caution. William Byron will lineup second ahead of Ryan Blaney, Brad Keselowski, Austin Cindric, Kyle Larson, AJ Allmendinger, Carson Hocevar, Justin Haley, Chase Elliott.
Alex Bowman and Ryan Preece were busted for speeding on pit road under this round of stops.
Stage 1 Updates
Lap 70: Brad Keselowski Takes Stage 1 Win
Brad Keselowski picked up his first Stage Win of the 2025 NASCAR Cup Series season after passing William Byron for the race lead with three laps remaining in the Stage.
Stage 1 Results:
Fin | Car | Driver | Stage Points | Playoff Points |
|---|---|---|---|---|
1 | 6 | Brad Keselowski | 10 | 1 |
2 | 2 | Austin Cindric | 9 | -- |
3 | 24 | William Byron | 8 | -- |
4 | 12 | Ryan Blaney | 7 | -- |
5 | 19 | Chase Briscoe | 6 | -- |
6 | 5 | Kyle Larson | 5 | -- |
7 | 77 | Carson Hocevar | 4 | -- |
8 | 9 | Chase Elliott | 3 | -- |
9 | 16 | AJ Allmendinger | 2 | -- |
10 | 7 | Justin Haley | 1 | -- |
Lap 68: Keselowski to the Lead!
Brad Keselowski got around William Byron for the race lead on Lap 68 as Byron got loose. Austin Cindric follows him through, and it looks like Keselowski will win Stage 1.
Lap 44: Top-Four Separated by Less Than a Second
As Byron continues to attempt to lap Noah Gragson, and Brad Keselowski continues to peak to the inside of him for the race lead, that has allowed third-place Austin Cindric and fourth-place Chase Briscoe to drive within 0.750 seconds of the race leader. Things have tightened up in the front of the field.
Lap 40: Keselowski Has Reeled Byron in For Lead
Brad Keselowski is applying massive pressure to William Byron for the race lead on Lap 40 as he has reeled him in. Byron is attempting to get around Noah Gragson to put him a lap down, but Gragson is really affecting Byron. Keselowski is looking to make his move.
Lap 25: Byron Continues to Lead, Keselowski to P2
William Byron continues to lead after getting around polesitter Chase Briscoe on the opening lap, but he hasn't scooted away. Brad Keselowski has moved to the runner-up spot as he got around Austin Cindric, and he is within a second of Byron, the leader.
Keselowski desperately needs a win to reverse what has been a disappointing season.
3:39 PM ET: We're Green!
Chase Briscoe and William Byron lead the field down to the green flag. Byron gets around Briscoe for the race lead and is credited with leading the opening lap of the race. Briscoe now loses a couple of more spots as Austin Cindric and Brad Keselowski have gotten by him by Lap 4.
Pre-Race Updates
3:28 PM ET: Engines Are Fired
With a command from Stu Swanson, the president of the Iowa Corn Growers Association the 37 cars that will battle in Sunday's Iowa Corn 350 at Iowa Speedway have roared to life. The cars will head out onto the track for a round of pre-race pace laps momentarily.
Noah Gragson to Drop to the Rear Prior to the Green Flag
Noah Gragson, the driver of the No. 4 Front Row Motorsports Ford Mustang Dark Horse, will join Kyle Busch in dropping to the rear of the field prior to the green flag of Sunday's Iowa Corn 350 Powered by Ethanol at Iowa Speedway.
Gragson's No. 4 team made unapproved adjustments to his race car following Saturday's qualifying session, which led to the designation that he will drop to the rear. Gragson was slated to start from the 31st starting spot.
NASCAR Reveals Pre-Race Festivities Schedule
As we are quickly approaching the start of Sunday's NASCAR Cup Series Iowa Corn 350 Powered by Ethanol at Iowa Speedway, NASCAR has officially revealed the pre-race festivities schedule prior to Sunday's race.
- 2:25 PM ET: Driver's Meeting
- 2:50 PM ET: Driver Introductions
- 3:20 PM ET: Invocation
- 3:21 PM ET: National Anthem
- 3:28 PM ET: Command to Start Engines
- 3:35 PM ET: Green Flag
At this time, there is just one car that will drop to the rear of the field prior to the green flag of the Iowa Corn 350, and that will be Kyle Busch, who was already slated to start from the 37th and final starting spot in the field.
Busch crashed his primary No. 8 Chevrolet hard in Saturday's practice session, which resulted in his team preparing a backup car for the race. The move to a backup car is why Busch is tagged with going to the rear in Sunday's race.
Iowa Corn 350 Powered by Ethanol Pre-Race Info
The Iowa Corn 350 Powered by Ethanol will be televised on USA Network. The race broadcast will begin at 3:30 PM ET.
The Motor Racing Network (MRN) and SiriusXM NASCAR Radio will provide the radio broadcast of Sunday's race. For subscribers of the HBO Max streaming service, NASCAR Driver Cam, which streams live in-car camera footage from every car in the field, will be available for today's race.
The overall race purse, which teams will fight for their portion of in Sunday's race, is a total of $9,797,935.
The race distance is 350 laps around the 0.875-mile oval, which equates to a 306.25-mile race distance.
The Iowa Corn 350 will be broken up into three Stages. Stage 1 will end at the conclusion of Lap 70. Stage 2 will end at the conclusion of Lap 210. And the race is scheduled to finish at the end of Lap 350, barring an Overtime finish.
The winner of Stages 1 and 2 will be awarded one Playoff Point, and the overall race winner will be awarded five Playoff Points. The Playoff Points will be added to the reseeded point totals if the drivers make it into the NASCAR Cup Series Playoffs, and will be carried through each round of the Playoffs.
Ryan Blaney is the defending winner of this event.
Chase Briscoe Collects Sixth Pole of the Season, Will Lead Field to Green at Iowa
I tell you what, Chase Briscoe has this whole qualifying thing figured out. If he can figure out how to close it out in the race, the rest of the NASCAR Cup Series garage will have major reason to be worried.
On Saturday, Briscoe secured his sixth pole of the NASCAR Cup Series season, his first year with Joe Gibbs Racing, and the pole is his fifth in his last 11 attempts. Briscoe turned a lap time of 23.004 seconds (136.933 mph) which was enough to top William Byron by 0.084 seconds for the top qualifying lap in the session.
Iowa Corn 350 Powered by Ethanol Starting Lineup
Pos | Car | Driver | Lap time | Diff |
|---|---|---|---|---|
1 | 19 | Chase Briscoe | 23.004 | -- |
2 | 24 | William Byron | 23.088 | 0.084 |
3 | 5 | Kyle Larson | 23.089 | 0.085 |
4 | 2 | Austin Cindric | 23.101 | 0.097 |
5 | 6 | Brad Keselowski | 23.119 | 0.115 |
6 | 12 | Ryan Blaney | 23.151 | 0.147 |
7 | 77 | Carson Hocevar | 23.159 | 0.155 |
8 | 9 | Chase Elliott | 23.165 | 0.161 |
9 | 16 | AJ Allmendinger | 23.174 | 0.170 |
10 | 7 | Justin Haley | 23.198 | 0.194 |
Click here for the full Iowa Corn 350 starting lineup.
Hard Practice Crash Sends Kyle Busch to Backup Car
Kyle Busch looked to be off to a decent start to his race weekend at Iowa Speedway as he ranked second-fastest in Group 1's NASCAR Cup Series practice session after he had turned 17 laps on Saturday. However, on the driver's 18th lap on track, all hell broke loose.
Busch suffered a wiggle in Turns 1 and 2, and as he attempted to get control of his car, he over-corrected, which shot his car hard right and head-first into the outside wall.
Here is the insanely hard crash that Kyle Busch just sustained in #NASCAR Cup Series practice at Iowa Speedway moments ago: pic.twitter.com/Ig3Suo8WFO
— Toby Christie (@Toby_Christie) August 2, 2025
The damage to the No. 8 Richard Childress Racing Chevrolet was catastrophic, but fortunately, Busch was able to climb from the wreckage unscathed. Due to the crash, Busch was unable to turn a qualifying lap, and will start from the rear of the 37-car field on Sunday at Iowa Speedway.
And now, his team will thrash on Sunday morning in order to prepare his backup race car.
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Toby Christie is the Editor-in-Chief of Racing America. He has 15 years of experience as a motorsports journalist and has been with Racing America since 2023.
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