The state of Michigan, which has several cities with sizable gay scenes (Detroit, Grand Rapids, Lansing, Ann Arbor) as well as arguably the Midwest's most popular gay resort community, Saugatuck, celebrates its Gay Pride Rally and Festival in late August (this year's date is August 24, 2013), which is about two months later than its been held in previous years. The festival takes place in Michigan's capital city, Lansing, but it draws some 15,000 spectators and participants from all over Michigan and the Midwest. Note that the Michigan Pride Diversity Festival moved to a new location last year, Burchard Park, in Old Town.
Be sure to check out the Michigan Pride Events page, for information on several related gatherings over the weekend, including a commitment ceremony, the Rally at the Capitol, March to the Capitol, and the Festival in Old Town.
The Michigan Pride Festival in Old Town runs from 1 pm until 11 pm on Saturday, August 24, in Lansing's Burchard Park in Old Town, at 220 East Maple Street. The gathering features vendors and booths, a Michigan Pride Family Zone, food stations, and performances by a number of musicians and bands. Leading the festivities this year is comedian and frequent Chelsea Lately guests Ross Matthews (aka "Ross the Intern"). Admission to the festival costs $5.
At 1 pm on Saturday, the Michigan Pride March to the Capitol leaves from Adado Riverfront Park, proceeds down Grand Avenue, and turns west onto Ottawa Street before continuing to the Michigan State Capitol grounds, where the Michigan Pride Rally as well as a commitment ceremony then kicks off at 1:30 on the capitol grounds.
Many gay-popular bars as well as restaurants and other businesses have special events and parties throughout Pride. Check local gay papers, such as Metra Magazine and Between The Lines/Pride Source for details. Also take a look at the useful travel site produced by the city's official tourism organization, the Greater Lansing Convention & Visitors Bureau.