I'm also a little confused. Beaumont and El Paso both lie on Interstate 10. If I followed the highway, they are 837 miles apart; if I travel other roads for shortest distance, they are 810 miles apart.
Likewise, Beaumont and Chicago are 1,096 miles apart by main highway, 1,010 miles by other roads for shortest distance.
Quote:
Beaumont to El Paso: 742 miles
Beaumont to Chicago: 770 miles
Maybe these are "air miles".