The city of Chicago is just one week away from NASCAR’s top drivers speeding through Grant Park, and significant street closures are on the way.

The Xfinity Series’ Loop 110 will take place on Saturday afternoon in Chicago, with the green flag dropping at 3:30 p.m., while the Cup Series’ Grant Park 165 will take place Sunday beginning at 1 p.m.

Chicago’s race is the only NASCAR event that takes place on a city circuit, with drivers speeding down iconic streets like Michigan Avenue, Columbus Drive and DuSable Lake Shore Drive.

As a result of the placement of the circuit, numerous significant street closures will take effect this week as crews prepare the track for the big event.

Already streets like Columbus Drive, Jackson Drive, Balbo Drive and Congress Plaza Drive have been closed to traffic, but major thoroughfares will start closing in coming days.

City officials say that Roosevelt Road will close Wednesday night beginning at 10 p.m. between Michigan Avenue and DuSable Lake Shore Drive, allowing for the setup of Turns 4 and 5 on the race track.

Long before NASCAR raced through downtown, Chicago was already home to the nation’s first auto race and decades of motorsports history, as told by Chicago racing historian Stan Kalwasinski.

Thursday morning at 12:01 a.m. will feature another significant closure, as the southbound lanes of DuSable Lake Drive will close between Randolph and McFetridge, with Turns 2, 3 and 4 featured on the iconic roadway.

At 10 p.m. Thursday, Michigan Avenue will close between Roosevelt Road and Jackson Drive. In addition, northbound DuSable Lake Shore Drive will close between Randolph and McFetridge, and will remain closed for the remainder of the race weekend.

 The races take place Saturday and Sunday. There will be closures on Michigan Avenue, Monroe Street, Ida B. Wells Drive, Indiana Avenue, Post Place and Garvey Court, among others. A full list can be found on the OEMC website.

Streets will begin reopening after the conclusion of the race. DuSable Lake Shore Drive and Michigan Avenue are “priority streets,” according to the city.

Shane van Ginsbergen won the inaugural race on the Cup Series in 2023, followed by a win for Alex Bowman in the 2024 race, which was shortened to 58 laps due to inclement weather and darkness.

As things stand heading into the Chicago race, Kyle Larson leads the Cup Series, followed by Denny Hamlin and Christopher Bell.

Van Ginsbergen is currently 10th in the standings, while Bowman is ranked 15th.