Kal-Haven is more of a connector freeway for other trails...it is a bike trail in summer that runs from Kalamazoo to South Haven like the White Pine Trail that runs north/south along 131 further north, just a straight boring cinder path that gets hit hard and really needs snow or you'll hear a lot of scrapping.
It crosses east/west right on M40 in Gobles, MI...you can drop there, not sure about the staging arrangement in South Haven or Kalamazoo.