This is a 33 1/2 mile trail that runs between Kalamazoo, MI and South Haven, MI. It used to be a railroad line, so it is relatively flat. The surface is great and each mile is clearly marked. There are latrines, pumps, and great scenery throughout the year. A trail pass is required: I believe it is $2.00 a day or $10.00 a year for an individual pass. Needless to say, it is a great place for long runs (also biking, skiing, & snowmobiling)!