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2025 Iowa Corn 350 loop data

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NASCAR Cup Series race number 23 of 36
Sunday, August 3, 2025 at Iowa Speedway, Newton, IA
350 laps on a 0.875 mile paved track (306.250 miles)

Time of race: 3:17:47 Average speed: 92.905 mph Pole speed: 136.933 mph	Cautions: 12 for 72 laps Margin of victory: 1.192 sec Attendance: n/a Lead changes: 10
Green flag passes: 2,861 (10.3 per green flag lap)
(Source: NASCAR loop data)

Glossary 2025 NASCAR Cup Series results / 2025 standings

Driver	Start	Mid Race	Finish	High Pos.	Low Pos.	Avg. Pos.	Pass Diff.	Green Flag Passes	Green Flag Times Passed	Quality Passes	Pct. Quality Passes	Fastest Lap	Top 15 Laps	Pct. Top 15 Laps	Laps Led	Pct. Laps Led	Total Laps	DRIVER RATING

Loop data for this race:
William Byron	2	15	1	1	30	6	-2	63	65	39	61.9	32	313	89.4	141	40.3	350	143.1
Chase Briscoe	1	16	2	1	25	7	-26	55	81	20	36.4	20	279	79.7	81	23.1	350	121.3
Brad Keselowski	5	2	3	1	27	4	19	53	34	42	79.2	59	336	96.0	68	19.4	350	124.4
Ryan Blaney	6	1	4	1	24	5	11	39	28	32	82.1	33	339	96.9	29	8.3	350	115.5
Ryan Preece	33	13	5	2	36	19	41	79	38	41	51.9	4	179	51.1	0	0.0	350	69.1
Bubba Wallace	15	21	6	6	36	19	21	118	97	36	30.5	18	180	51.4	0	0.0	350	88.7
Alex Bowman	16	11	7	2	32	14	25	75	50	34	45.3	1	236	67.4	0	0.0	350	84.6
Carson Hocevar	7	18	8	5	31	12	-15	79	94	26	32.9	9	249	71.1	0	0.0	350	100.9
Joey Logano	14	27	9	8	32	18	-24	85	109	22	25.9	3	96	27.4	0	0.0	350	77.2
Austin Dillon	18	19	10	2	30	13	14	104	90	56	53.8	5	214	61.1	0	0.0	350	91.0
Ross Chastain	28	29	11	7	30	19	9	94	85	31	33.0	1	105	30.0	0	0.0	350	69.2
Austin Cindric	4	3	12	1	28	7	16	55	39	31	56.4	13	319	91.1	20	5.7	350	102.6
Josh Berry	12	5	13	1	31	13	14	87	73	36	41.4	7	220	62.9	0	0.0	350	80.8
Chase Elliott	8	22	14	1	29	11	11	87	76	35	40.2	9	285	81.4	11	3.1	350	93.3
John H. Nemechek	29	26	15	5	32	17	-2	123	125	44	35.8	0	150	42.9	0	0.0	350	66.3
Erik Jones	25	8	16	6	31	21	30	107	77	16	15.0	0	68	19.4	0	0.0	350	59.7
Christopher Bell	17	20	17	4	31	16	-4	97	101	38	39.2	10	162	46.3	0	0.0	350	76.5
A.J. Allmendinger	9	23	18	6	32	15	0	104	104	32	30.8	4	215	61.4	0	0.0	350	86.3
Tyler Reddick	22	7	19	1	31	20	17	121	104	30	24.8	4	69	19.7	0	0.0	350	61.9
Kyle Busch	37	12	20	4	37	21	33	115	82	29	25.2	0	76	21.7	0	0.0	350	52.2
Ty Gibbs	20	4	21	3	27	16	8	99	91	24	24.2	9	138	39.4	0	0.0	350	69.9
Chris Buescher	27	14	22	7	31	24	10	96	86	11	11.5	2	42	12.0	0	0.0	350	47.6
Justin Haley	10	24	23	6	30	14	-33	71	104	29	40.8	5	237	67.7	0	0.0	350	76.2
Denny Hamlin	11	6	24	4	30	13	-20	68	88	47	69.1	1	270	77.1	0	0.0	350	72.1
Daniel Suarez	26	9	25	7	29	22	0	129	129	30	23.3	1	85	24.3	0	0.0	350	47.2
Cole Custer	19	10	26	8	30	24	-15	87	102	4	4.6	0	23	6.6	0	0.0	350	44.5
Michael McDowell	13	25	27	10	32	18	-35	63	98	18	28.6	4	131	37.4	0	0.0	350	59.4
Kyle Larson	3	17	28	3	30	14	-27	83	110	26	31.3	6	203	58.0	0	0.0	350	78.6
Noah Gragson	31	35	29	21	36	33	5	53	48	0	0.0	0	0	0.0	0	0.0	350	36.3
Riley Herbst	24	31	30	17	35	28	-22	71	93	0	0.0	1	0	0.0	0	0.0	350	39.7
Shane Van Gisbergen	21	28	31	8	34	25	13	77	64	9	11.7	1	15	4.3	0	0.0	349	43.2
Cody Ware	35	33	32	23	36	33	-28	14	42	0	0.0	0	0	0.0	0	0.0	349	30.0
Ricky Stenhouse Jr	30	36	33	28	36	34	-8	41	49	0	0.0	0	0	0.0	0	0.0	347	29.2
Todd Gilliland	34	32	34	17	34	31	-7	54	61	0	0.0	0	0	0.0	0	0.0	347	33.7
Ty Dillon	32	30	35	29	36	33	-5	59	64	0	0.0	2	0	0.0	0	0.0	346	29.0
Zane Smith	23	34	36	10	36	27	-24	56	80	10	17.9	0	16	4.7	0	0.0	344	40.7
Joey Gase	36	37	37	36	37	37	0	0	0	0	0.0	0	0	0.0	0	0.0	340	23.2

Green Flag Passes: Green flag passes for position.Pass Diff.: Difference between Green Flag Passes and Green Flag Times Passed. Quality Passes: Number of times passing a car running in the Top 15 while under a green flag. Fastest Lap: How many times a driver had the fastest lap of all drivers.

Driver Rating: A formula combining the following categories: Win, Finish, Top-15 Finish, Average Running Position while on Lead Lap, Average Speed Under Green, Fastest Lap, Led Most Laps, Lead-Lap Finish. Maximum: 150 points per race.