If you're looking for a meeting place or a good stop around ½ or halfway between Farmers Branch and Cincinnati, you can try Memphis, TN, which is about 6½ hours northeast of Farmers Branch, or a little over 7 hours southwest of Cincinnati.
Other possible places to stop near the midpoint include West Memphis, Bartlett, Germantown, Covington, and Brownsville.
About ¼ or a fourth of the way, you can stop at Arkadelphia, AR. This is about 3½ hours east of Farmers Branch.
About ⅓ or a third of the way, you can stop at Little Rock, AR. This is about 4½ hours northeast of Farmers Branch.
About ⅔ or two thirds of the way, you can stop at Franklin, TN. This is about 9½ hours northeast of Farmers Branch, or a little over 4 hours southwest of Cincinnati.
About ¾ or three fourths of the way, you can stop at Bowling Green, KY. This is about 10½ hours northeast of Farmers Branch, or a little over 3 hours southwest of Cincinnati.
If you drive straight through without stopping at all, the total distance is 941 miles. The distances shown above don't include local roads to get into each town, so if you're planning a long road trip, make sure you factor in traffic and road conditions, rest stop breaks, and interesting detours along the way. If you're in a rush, you can do the trip with zero stops, and your total travel time would be around 13 hours, 49 minutes.