West Plains, Missouri is halfway between Tulsa and Clarksville
The halfway point between Tulsa, OK and Fort Campbell, KY falls in or around Mountain View, MO.
Edwardsville, IL
Terre Haute, Indiana
Urbana, Illinois.
Memphis, TN
The halfway point between Gulfport, Mississippi and Tulsa, Oklahoma is Varner, Arkansas. There is approximately 564 miles between Tulsa and Gulfport.
The halfway point is Jackson, TN.
Asheville NC
158km is the halfway point between Columbia Sc and Bennettsville sc.
In the middle of the Indian Ocean, west of Australia.
According to Google Maps the distance driven on I40 = 884 miles. So halfway would be 442 miles = New Shady Grove in Arkansas
The distance from Tulsa, OK to Beijing, China is 6,806 miles or 10,954 kilometers. A flight from Tulsa, OK to Beijing, China takes about 14 hours.