Hi!

This is my first flight plan. I checked it in FS 2020.
In the flight plan the departure is KGRB, in Green bay and the arrival is KMSP in Minneapolis.
On the flight you can see the
  • Lambeau Field - home of Green Bay Packers(My favorite team),
  • Ford Field - home of Detroit Lions,
  • Soldier Field  - home of Chicago Bears and
  • U.S. Bank Stadium which is home of Minnesota Vikings.
It's almost 1439 km (~900 mile).

Enjoy it.

After you downloaded the file (.zip), you hve to extract it to somewhere. There is only one file (.pln),
In Microsoft Flight Simulator 2020 you can choose the World Map, then hit [SPACE] or hit the LOAD/SAVE button on the lower menu. 
Select the .pln file.