Waco!
The halfway point between Dallas, Texas and Warren, Ohio is in Centerville, Tennessee.
175 miles taking this route:Take U.S. 190 EAST, from College Station, to I-45 NORTH to DALLAS, in Madisonville.Take I-45 NORTH to Dallas.
185 miles taking this route:Take SH-6 NORTH from College Station to U.S. 77 BUSINESS to WACO.Take U.S. 77 BUSINESS to I-35 to DALLAS - FT. WORTH and AUSTIN. Follow signs to I-35 NORTH to DALLAS - FT. WORTH.Take I-35 NORTH to I-35E NORTH to DALLAS. Take I-35E NORTH to Dallas.
Washburn, TX is the halfway point.
Nashville, TN
Dallas
Amarillo, TX
Powderlick, OH.
1/2 is the halfway point
A rough estimate would be Amarillo, Texas.
TENNESEE
Turrell, AR