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CHICAGO - NASCAR drivers hit the streets Saturday in downtown Chicago.
The day begins with the NASCAR Xfinity Series. Teams begin practice runs at 10 a.m.
Qualifying rounds begin at 11 a.m. and The Loop 121 race kicks off at 4 p.m.
The NASCAR Cup Series drivers have practice at 12:30 p.m. with qualifying rounds at 1:30 p.m.
The Grant Park 220 will start at 4:30 p.m. Sunday afternoon. Sunday's race is 100 laps, equating 220 miles around a track full of turns set up by Grant Park, partially on DuSable Lake Shore Drive.
Drivers are expected to reach speeds of 170 mph, according to one NASCAR Cup Series driver.
It's NASCAR’s first-ever street race so it will be an adjustment for some.
Chicago streets shut down for NASCAR — what to know
NASCAR hosted a ‘Welcome Party’ for drivers, executives, and Chicago notables at RPM Events on Friday.
"We are about to make history this weekend," said Julie Giese, NASCAR Chicago Street Race president.
The weather looks like it will stay decent enough for the race weekend to continue as planned with some chance of rain.
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Preps for Chicago's NASCAR street race at the finish line
The wait is over, as Chicago's NASCAR street race kicks off Saturday downtown.
NASCAR officials told FOX 32 Chicago the only way it will be paused is if there is a downpour or lightning.
View the NASCAR Street Race course layout HERE.
For a comprehensive list of street closures and detours due to NASCAR’S Street Race, CLICK HERE.
For the weekend’s full schedule of events, CLICK HERE.