The Giveathon, which runs from Tuesday, May 16 at 5:00 p.m. ET until 8:00 p.m. ET on Friday, May 19, features bonus grants every hour during the 75-hour window and matching gift donations for nonprofit organizations on May 19, as well as T-shirts and memorabilia items as incentives for donors.

Every hour during the 75-hour window, NASCAR and Speedway Motorsports will randomly award one (1) $750 bonus grant to charities who receive at least one $25 donation during that hour.

Start donating at 5:00 pm on May 16