It will have a lot of determining factors, such as car count, the event being held that night, yellow flags during the races.
Normally around 10:30 ish. But this weekend being the Prairie Dirt Classic it can definitely be later.
Saturday will be the busiest day of the year.. getting out of town after the races make add another 30-45 minutesas traffic will be very congested
They can last till 11 or 11:30 but it all depends on cautions. Could go later.
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