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 - Interstate 20, Clinton, MS 39056.
Since there are approximately 600 miles between Chicago, IL and Chattanooga, TN, the approximate half way point would be Louisville, KY.
Around St Louis, MO.
Interstate 20, Clinton, MS 39056
Ashburn, GA.
Roanoke, VA
Milan, OH
The halfway point between Minneapolis/St. Paul and Boston is approximately Detroit, Michigan.
The halfway point between Chicago, Illinois and St. Louis, Missouri is McLean, Illinois according to MeetWays.com.
Walbridge, OH
Hammond, IN
The halfway point between St. Paul and Lynchburg, TN, is on the southeast side of Bloomington, IL, between Bloomington and Champaign on I-74.
Terrell TX, east of Dallas.
If you drive through Chicago, the halfway point between St. Paul and Detroit is just on the northwest side of Chicago, around Merengo, Genoa, and Elgin, Illinois.
George Joseph Flanigen has written: 'The centenary of Sts. Peter and Paul's Parish, Chattanooga, Tennessee' -- subject(s): Sts. Peter and Paul's Church, Chattanooga, Tenn
155 miles
If you need to stop around the 13 mile mark of the 26 mile trip, the Minnesota Zoo would be a good choice. It is near the intersection of I35E and Highway 77 (Cedar Ave).
The midway point between Florida (continental US) and the Republic of South Africa would be in the Atlantic Ocean off the coast of Brazil, just south of the equator. The nearest island group is the Saint Peter and Saint Paul Archipelago (naval scientific station only), and the nearest land location is Touros, Brazil.