Key keywords: Carb Day 2026, Indianapolis Motor Speedway (IMS), 2026 Indianapolis 500, IndyCar Series, Carb Day concert, IMS packed fan attendance, Indy 500 pre-race festivities The 2026 edition of Carb Day, the iconic pre-race celebration held one day before the Indianapolis 500, drew a record-breaking crowd to the Indianapolis Motor Speedway on Friday, with official IMS attendance reports confirming 152,000 fans filled the grandstands, infield, and concert grounds, marking the highest Carb Day turnout in the venue’s 117-year history. For casual and diehard racing fans alike, Carb Day has long been a beloved staple of Indy 500 weekend, combining high-stakes on-track action with family-friendly entertainment and community gathering. The 2026 event opened with the final practice session for IndyCar Series drivers, who took to the 2.5-mile oval for one last opportunity to tweak their car setups and test race-day conditions before Sunday’s 500-mile contest. Fans cheered loudly as pole-sitter Scott Dixon posted the fastest lap of the session, with many holding up custom signs supporting their favorite drivers across the 33-car field. Following practice, the annual Pit Stop Challenge took center stage, with 12 top IndyCar teams competing for a $100,000 grand prize by testing their pit crew speed and precision during simulated tire changes and refuels. Team Penske claimed its third consecutive Pit Stop Challenge title, with its crew completing a full stop in just 10.2 seconds, beating Chip Ganassi Racing’s entry by 0.3 seconds in the final round to thunderous applause from the packed stands. The day concluded with the annual Carb Day headlining concert, featuring multi-platinum rock band Foo Fighters, who played a 90-minute set of hit songs for a standing-room-only crowd at the IMS infield concert stage. IMS officials noted that they expanded venue capacity, added 12 additional entry gates, 300 extra portable restrooms, and 45 new food and beverage vendors for the 2026 event to accommodate the expected large turnout, with no major safety incidents or long wait times reported throughout the day. Many fans traveled from across the U.S. and even internationally to attend the 2026 Carb Day, with some camping in the IMS infield for as long as five days ahead of the event to secure prime viewing spots. IMS President Doug Boles released a statement following the event saying, "Today’s turnout is a testament to the enduring magic of the Indianapolis 500 and the loyalty of our incredible fan base. Carb Day is all about celebrating the community that makes this race weekend so special, and seeing every corner of this facility packed with smiling, excited fans is exactly why we work so hard to put this event on every year." Ticket sales for Sunday’s 2026 Indianapolis 500 are also on track to hit record levels, with officials expecting a total attendance of over 350,000 for the main race.