NASCAR Xfinity - Chicago

NASCAR returns to Chicagoland Speedway in Joliet, Illinois, bringing the NASCAR O'Reilly Auto Parts Series back to this D-shaped tri-oval for the first time since the track hosted national series racing in 2019. The nascar-xs race at Chicagoland Speedway offers fans in the Chicago metropolitan area a chance to experience competitive stock car racing on a classic 1.5-mile intermediate track during Independence Day weekend.

The NASCAR O'Reilly Auto Parts Series Race at Chicagoland

The NASCAR O'Reilly Auto Parts Series race covers 300 miles over 200 laps on the asphalt surface of Chicagoland Speedway. This series, formerly known as the Xfinity Series, will compete under its new name starting in the 2026 season. The race is part of a full Independence Day weekend of NASCAR competition, sharing the schedule with the ARCA Menards Series and the NASCAR Cup Series.

The series traditionally features a mix of rising stars, experienced competitors, and Cup Series drivers who compete for wins and championship points. The 2026 season marks the official rebranding to the O'Reilly Auto Parts Series, bringing a fresh identity while maintaining the competitive spirit that defines this level of NASCAR racing.

Chicagoland Speedway Circuit Details

Chicagoland Speedway sits approximately 45 miles south of downtown Chicago in Joliet, Illinois, providing convenient access for racing fans throughout the region. The track opened in 2001 at a construction cost of $130 million and has a seating capacity of 47,000 spectators.

Track Specifications

The 1.5-mile D-shaped tri-oval features progressive banking that challenges drivers throughout each lap. The turns carry 18 degrees of banking, while the frontstretch has 11 degrees and the backstretch features 5 degrees. This banking configuration creates multiple racing lines and opportunities for competitive battles. NASCAR has owned the facility since 2019, and officials have confirmed that facility updates will be completed following the seven-year hiatus from national series competition.

Racing Surface and Layout

The asphalt surface at Chicagoland Speedway combines with the tri-oval shape to produce close racing. The 1.5-mile length places it in the intermediate track category, a type of circuit that has consistently delivered competitive NASCAR events. The track's design allows drivers to use different strategies regarding tire management, fuel conservation, and racing line selection.

Participants and Competition

The NASCAR O'Reilly Auto Parts Series attracts a diverse field of competitors. Teams prepare stock cars that meet series regulations, and drivers range from young prospects developing their skills to veteran racers with extensive experience. Some NASCAR Cup Series drivers also participate in these races, adding star power and raising the competition level.

Notable drivers like reigning NASCAR Cup Series champion Kyle Larson have already tested at Chicagoland Speedway, demonstrating strong interest from the racing community in returning to this venue. The competitive nature of the series ensures close battles throughout the field, with championship implications often hanging in the balance.

Technical Specifications

The NASCAR O'Reilly Auto Parts Series uses purpose-built stock cars engineered for oval and road course competition. These vehicles feature a steel-tube frame chassis that provides safety and structural integrity. The cars are powered by V8 engines producing approximately 750 horsepower when running without restrictor plates, paired with four-speed manual transmissions that require skilled shifting from drivers.

The series emphasizes driver skill and team strategy. Engineers and crew chiefs work to optimize setups for the specific characteristics of each track. At Chicagoland Speedway, teams must balance speed in the turns with straight-line performance, while managing tire wear across long runs. The technical regulations promote close racing and create opportunities for different strategies to succeed.

History and Context of Racing at Chicagoland

From 2001 through 2019, Chicagoland Speedway hosted NASCAR Cup Series, Xfinity Series, and ARCA Racing Series events annually. The nascar-xs race at this track was historically known as the Chicagoland 300, establishing itself as a regular part of the NASCAR calendar. The seven-year absence from national series competition makes the 2026 return significant for both the facility and the Chicago-area racing community.

Fan Demand and Regional Impact

NASCAR's decision to return to Chicagoland Speedway responds directly to fan demand for racing on intermediate 1.5-mile oval tracks. These circuits have delivered competitive events that showcase driver talent and team preparation. The Midwest represents a crucial market for NASCAR, and the return to Joliet reinforces the sanctioning body's commitment to serving fans in the Chicago region and surrounding states.

The weekend occurs during Independence Day celebrations, leveraging the festive atmosphere and patriotic spirit of the holiday. The Chicagoland Speedway offers camping facilities, adding to the traditional NASCAR weekend experience. Local officials have described the NASCAR return as a fantastic homecoming for Joliet and the entire region, highlighting the economic and community benefits that accompany these events.

The 2026 Season Context

The 2026 NASCAR schedule includes the return to Chicagoland Speedway while the Chicago Street Race takes a pause. NASCAR had conducted downtown Chicago street course racing from 2023 through 2025, but officials chose to return to the traditional oval track for 2026 while maintaining a presence in Illinois. The possibility remains open for a future return to street course racing in Chicago.

What Makes This Event Special

The NASCAR O'Reilly Auto Parts Series race at Chicagoland Speedway combines several appealing elements for racing fans. The 1.5-mile intermediate oval configuration has proven itself capable of producing competitive racing with multiple grooves and passing opportunities. The Independence Day weekend timing adds patriotic celebrations to the racing action, creating a memorable atmosphere.

The seven-year gap since NASCAR last visited this facility builds anticipation among fans who remember the competitive races from previous years. Drivers and teams will need to relearn the nuances of the track, potentially leveling the playing field and creating opportunities for unexpected results. The rebranding to the O'Reilly Auto Parts Series adds another layer of significance, marking a new chapter in the history of NASCAR's secondary national series.

The Chicago area gains renewed access to NASCAR national series competition, bringing professional stock car racing within reach of millions of fans in the Midwest. The combination of competitive racing, holiday celebrations, and the return to a facility with established NASCAR history positions this event as a centerpiece of the 2026 season for the series.