Battle Creek's system of bike paths makes a nice outing close to Kalamazoo. The featured attraction is a riverside trail running through downtown Battle Creek and along the Battle Creek and Kalamazoo Rivers. Park at Bailey Park and ride through the woods along the Battle Creek River. It's about 4 miles to downtown Battle Creek, where Arcadia Brewing might make a nice stop. The trail continues along the Kalamazoo River to Fort Custer. (I couldn't find an obvious place to park at the Fort Custer end.)
Another trail segment goes north along 20th Street to the Leila Arboretum and then east through various neighborhoods and parks. This section isn't as attractive but it creates a loop back to Bailey Park.
I teach economics at Kalamazoo College. My wife is also an economist. We were on sabbatical in Europe for the 2014-15 academic year. (Salamanca, Spain, followed by Oxford, UK.) We were in Uruguay for the 2006-7 academic year.