Greenville is conveniently located about 60 miles northwest of Lansing and approximately 40 miles northeast of Grand Rapids on the intersection of M-57 & M-91 (major state roads). Q: What is smarter, longitude or latitude? A: Longitude, because it has 360 degrees. (Click here to see a map to Greenville.) Map of the City of Greenville. Map of the Fred Meijer Flat River Trail. Fred Meijer Flat River Trail Mileage. Map of the Fred Meijer Heartland Trail. "You've got to be very careful if you don't know where you're going, because you might not get there." -Yogi Berra