Practice #1 : Chicagoland Speedway
eero 400
Chicagoland Speedway , Joliet, IL
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- Chicagoland Speedway
- eero 400
- Busch Pole Award Pole Winner: Denny Hamlin
- Age: 45
- Team : No 11 - Progressive Insurance Toyota
- Owner: Joe Gibbs
- Crew Chief: Chris Gayle
- Denny Hamlin won the Pole Award for the eero 400 with a lap of 30296 seconds, 178241 mph
- This is his 52nd pole in 740 NASCAR Cup Series races
- This is his fourth pole and 11th top-10 start in 2026
- This is his first pole in 15 races at Chicagoland Speedway
- Kyle Larson (second) posted his 12th top-10 start of 2026 and his fourth in seven races at Chicagoland Speedway
- Chris Buescher (third) posted his first top-10 start at Chicagoland Speedway It is his 10th in 19 races this season
- Connor Zilisch (21st) was the fastest qualifying rookie
- Drivers Entered: 38
- Laps Scheduled: 267
- Margin of Victory: 0.276 Seconds
- Time of Race: 3 Hours 9 Minutes 18 Seconds
- Average Speed: 126.941
- Cautions: 7 for 43 laps
- Lead Changes: 28
- Green Flag Passes: 3,388 (15.1 passes per green flag lap)
- Chicagoland Speedway
- eero 400
- Race Winner: Chase Briscoe
- Age: 31
- Team : No 19 - Bass Pro Shops Toyota
- Owner: Joe Gibbs
- Crew Chief: James Small
- Chase Briscoe won the eero 400, his sixth victory in 199 Cup Series races
- This is his first victory and ninth top-10 finish in 2026
- This is his first victory and first top-10 finish in one race at Chicagoland Speedway
- Christopher Bell (second) posted his first top-10 finish in one race at Chicagoland Speedway It is his eighth top-10 finish in 2026
- Denny Hamlin (third) posted his eighth top-10 finish in 15 races at Chicagoland Speedway
- Connor Zilisch (38th) was the highest finishing rookie
- Denny Hamlin leads the point standings by 44 points over Tyler Reddick
