The halfway point between Portland, Maine and Colorado Springs, Colorado falls in or around Indianapolis, Indiana.
Indianapolis, Indiana
Jackson, MI
Lansing
Jewell Village, Indiana is the halfway point from Lansing, MI to Columbia, TN. The closest major city that is roughly halfway is Indianapolis, IN.
Marion, OH.
Manchester, TN
Manchester, TN
Manchester
I'm going to assume you're in Michigan and you meant to type Lansing. The halfway point is Farwell.
The halfway point is just west of Iowa City, Iowa.
West Manchester, Ohio
Berea, Kentucky is almost exactly the halfway point.
The halfway points are the points which mark the half distance covered by the flight. These lie in the mid of both the above mentioned places. These points change for different locations. Halfway points for the above mentioned places are - Northampton.
Lake Michigan borders Michigan, Wisconsin, Illinois, and Indiana. Lansing is the capital city in the U.S. state of Michigan. Madison is the capital city in the U.S. state of Wisconsin. Springfield is the capital city in the U.S. state of Illinois. Indianapolis is the capital city in the U.S. state of Indiana.