Chicagoland NASCAR 2026 Practice Results: Fastest Drivers and Full Speeds

Why This Practice Session Mattered

Chicagoland Speedway hasn’t hosted a NASCAR Cup Series race since Alex Bowman’s win in 2019. That gap matters more than it might seem on paper. Every crew chief on the grid walked into Friday’s session with old notebooks, outdated tire data, and a Next Gen car that has never turned a lap on this specific surface. Practice, in other words, wasn’t just a formality this weekend — it was genuinely new information.

That’s exactly why the fastest laps carried extra weight. Teams weren’t refining a known setup; they were building one from scratch, in real time, under the lights in Joliet.

Chicagoland NASCAR Practice Results 2026 — Top 10

Herbst’s lap came in the closing minutes of the session, and it capped off a strong day for 23XI Racing, which put all four of its Toyotas inside the top eight. Here’s the complete top-10 breakdown from Friday’s single practice session.

Notably, Kyle Larson and Denny Hamlin posted identical top speeds of 177.877 mph, a dead heat that hinted at the tight qualifying battle to come. Herbst’s margin over the field was thin — barely a tenth of a mile per hour separated first from fifth — which told every team in the garage that Chicagoland was going to reward precision, not raw horsepower.

Long-Run Pace: Who Had the Best 10-Lap Average?

Single-lap speed grabs headlines, but long-run pace usually tells the real story of who’s fast on Sunday. That distinction belonged to Tyler Reddick. While Herbst and Wallace owned the top of the speed chart, Reddick’s No. 45 Toyota was the class of the field once tires started falling off.

10-Lap Average Speed Leaders

*Full 10-lap average figures for positions 2–10 were not published in official practice notes; Reddick’s benchmark run is confirmed across multiple NASCAR sources.

Reddick didn’t just lead the 10-lap average — he was also quickest across the 15-, 20-, and 25-lap averages, and he racked up 61 laps, the most of any driver in the field. Cindric, meanwhile, led the shorter 5-lap average column, suggesting Penske’s setup favored an early, aggressive run before the tire started to go away.

Garage Notes and Incidents From Practice

Not every storyline from Friday was about outright speed. A handful of garage-area notes are worth tracking heading into race day.

Erik Jones’ Mystery Damage

Erik Jones’ No. 43 Toyota picked up unexplained underbody damage during the session. His team wasn’t immediately sure what caused it, only that the car had clearly hit something on track. If repairs require unapproved changes before Sunday, Jones could be forced to start from the rear of the field.

Brake Lockups on Pit Entry

Multiple drivers locked up their brakes entering pit road during the session — a small but telling detail. It suggests the braking zones at Chicagoland are trickier than teams expected after seven years away, and it’s a detail crew chiefs will be watching closely once the race is under green-flag pressure Sunday.

Qualifying Results: How Practice Speed Translated to the Grid

Saturday’s qualifying session confirmed what Friday’s practice speeds had hinted at: Toyota was the class of the field at Chicagoland. Denny Hamlin claimed the pole with a lap of 178.241 mph, edging Kyle Larson by just 0.001 seconds — one of the tightest pole battles of the 2026 season.

eero 400 Starting Lineup — Top 10

Toyota locked up five of the top seven starting spots, backing up its strong showing in Friday’s practice. However, Tyler Reddick — the long-run pace leader from practice — qualified just 13th, meaning he’ll need to work through traffic early if that long-run speed is going to translate into a race win. The back of the field tells its own story too: Joey Logano qualified 31st, Shane van Gisbergen 30th, and practice’s own Corey Heim 28th, all well off the pace they’d shown a day earlier.

Track Conditions and Tire Strategy at Chicagoland

Goodyear brought a tire package to Chicagoland that’s already seen action this season at Nashville Superspeedway, with the left-side compound also used recently at Michigan and Pocono. Teams were allotted twelve total tire sets for the weekend: three for practice, one for qualifying that carries over into the race, and eight fresh sets for Sunday’s 400-mile event.

Because the track hasn’t hosted a Cup race since 2019, the surface itself was something of an unknown. Broadcast analyst Dale Earnhardt Jr., calling Sunday’s race, described Chicagoland as a track that will punish the Next Gen car’s stiffer suspension, specifically pointing to a rough bump in the tunnel entering Turns 3 and 4. That kind of surface irregularity tends to separate cars on long runs more than it does in a single qualifying lap — another reason Reddick’s long-run pace in practice looks so significant heading into Sunday.

Race Weekend Schedule (Eastern Time)

Here’s the full eero 400 weekend schedule at Chicagoland Speedway, with all times listed in Eastern Time for the U.S. motorsport audience.

Sunday’s eero 400 marks the second half of the 36-race 2026 Cup Series season getting underway, and it’s also the second of five races in NASCAR’s In-Season Challenge tournament. With eight regular-season races remaining after Chicagoland, every practice speed and qualifying result this weekend carries extra weight for teams jockeying for playoff position.

Which Teams Impressed Most in Practice?

Looking at the full picture from Friday through Saturday, three teams stood out above the rest of the Chicagoland field.

23XI Racing was the story of practice, with all four cars — Herbst, Wallace, Reddick, and eventually a strong qualifying run — inside the top eight in speed. That kind of four-car consistency across a brand-new track is rare and suggests a simulation program that paid off immediately.

Joe Gibbs Racing answered in qualifying, taking the pole with Hamlin and stacking four Toyotas inside the top seven starting spots. Between JGR and 23XI, Toyota’s simulation work on an unfamiliar surface looks like the clear early advantage of the weekend.

Hendrick Motorsports, meanwhile, split the difference — Larson was a genuine pole threat in both practice and qualifying, and Chase Elliott and William Byron rounded out a strong top-10 qualifying effort for the Chevrolet camp.

Playoff and In-Season Context Heading Into Sunday

Denny Hamlin arrives at Chicagoland as the NASCAR points leader, and his pole-winning lap only reinforces the form he’s carried through the first half of the season. Larson’s front-row start alongside him sets up a rematch of a rivalry that’s defined several intermediate-track weekends already in 2026. Meanwhile, Reddick’s practice pace puts him firmly in the conversation even from 13th on the grid — intermediate tracks like Chicagoland have repeatedly shown that a strong long-run car can pass its way to victory lane, even without a top-five starting spot.

For fans building weekend predictions, the gap between practice speed and qualifying speed at Chicagoland is worth remembering: Toyota’s four-car strength across both sessions makes the manufacturer the favorite on paper, but Chevrolet’s Larson and Ford’s Buescher and Keselowski proved Saturday that the qualifying picture isn’t a one-brand story.

Frequently Asked Questions

Final Take: What Chicagoland Practice Tells Us About Sunday

Chicagoland Speedway’s return to the Cup Series schedule gave every team a genuinely blank canvas, and the results from practice and qualifying suggest Toyota walked in the most prepared. Riley Herbst’s practice speed and Denny Hamlin’s pole are separate storylines, but they point the same direction: 23XI Racing and Joe Gibbs Racing did their homework on a track nobody in the current garage had raced on in years.

Still, single-lap speed rarely tells the whole story at a 1.5-mile oval with a rough surface and 400 miles of tire wear ahead. Tyler Reddick’s long-run dominance in practice — despite a modest 13th-place qualifying effort — makes him the name worth watching once green-flag runs stretch past 20 laps. Add in Kyle Larson’s front-row start, a bumpy surface that’s already causing brake issues, and eight playoff-shaping points on the line, and Sunday’s eero 400 has the ingredients for one of the more unpredictable races of the 2026 season.

Full race results, stage winners, and the updated championship standings will follow once the checkered flag falls in Joliet.