Michigan International Speedway's seating, mezzanines, concession and restroom buildings, suites and chalets will now be smoke-free, according to a track release.
The announcement follows a state measure banning smoking in public places which will take effect May 1.
Michigan hosts two NASCAR race weekends this season.
"Not only are we adhering to the law, but we are addressing a growing number of concerns from our race fans who do not smoke," MIS President Roger Curtis said in a news release. "Race fans who smoke can still do so in approved areas. We appreciate all our fans for their understanding and patience."
Smoking will be allowing in open-air areas behind the grandstands, in the New Holland Fan Plaza and in campgrounds.
The Champions Club, seating and adjacent patios will also be smoke-free.
Those violating the policy will be subject to fines by state and county enforcement officials who are on site during race weekends.
Signs will be posted to remind fans of the non-smoking areas.
"MIS ushers and security will monitor the grandstand seats, and we fully expect our fans to police each other," Curtis said. "We will have a number of avenues in place for fans to notify us, including our text messaging service as well as notifying security, if someone around them is smoking in the grandstands or suites."