CHICAGO (WLS) -- Saturday is the 34th running of the Arlington Million horse race at Arlington International Racetrack.
Metra is adding additional service for people heading to the racetrack.
The annual race is part of the Breeder's Cup Challenge and is expected to draw large crowds.
It will also add an inbound train which will depart from the park at 6:15 p.m., which should be after the final race. That train will run express to Jefferson Park and will then make all stops on its way to the Ogilvie Transportation Center. null
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