Halfway Point Between St. Louis, MO and Dallas, TX

Geographic Midpoint

Using coordinates:

• St. Louis: 38.6° N, 90.2° W
• Dallas: 32.8° N, 96.8° W

Midpoint = ((38.6+32.8)/2, (-90.2-96.8)/2) = 35.7° N, 93.5° W.

Real-World Location

This point falls near Mount Ida, Arkansas (Montgomery County), in the Ouachita National Forest—roughly 300 miles from each city via I-30/I-40.

Driving Midpoint

Via I-30/I-40, the halfway driving distance (~310 mi each way) is around Little Rock, AR.