Houston · the midpoint
Houston is the most populous city in the U.S. state of Texas and the Southern United States. It is the fourth-most populous city in the United States, with a population of 2.3 million at the 2020 census. Read more →
The fair place to meet is Houston, TX — the city closest to the midpoint of Austin and San Antonio. From the farther side that’s about 3 hr 58 min of driving.
Recommended midpoint
Houston, TX
From Austin
3 hr 39 min
146 mi to Houston
From San Antonio
3 hr 58 min
189 mi to Houston
That’s an even split — both sides drive within 19 min of each other. Austin and San Antonio are about 74 miles apart.
Austin and San Antonio are about 74 miles apart by road. Split the difference and you arrive near Houston, the city closest to the halfway point between them. That splits the trip almost evenly — about 3 hr 39 min from Austin and 3 hr 58 min from San Antonio.
At this range, Houston works for a same-day meetup: close enough from both Austin and San Antonio to meet for lunch or an afternoon and still be home by evening.
If Houston doesn't have what you're after, Dallas and Oklahoma City are also close to the midpoint and worth a look — each keeps the drive reasonably balanced between Austin and San Antonio.
Houston is the most populous city in the U.S. state of Texas and the Southern United States. It is the fourth-most populous city in the United States, with a population of 2.3 million at the 2020 census. Read more →
Austin is the capital city of the U.S. state of Texas. With a population of 961,855 at the 2020 census, it is the 12th-most populous city in the U.S., fifth-most populous city in Texas, and second-most populous U.S. Read more →
San Antonio is a city in the U.S. state of Texas. It is the seventh-most populous city in the United States, the second-most populous city in Texas, and the second-most populous city in the Southern U.S., with a population of 1.43 million at the 2020 census. Read more →
City descriptions adapted from Wikipedia (CC BY-SA); photos via Wikimedia Commons, credited above.
Estimates use straight-line distance and typical road speeds; real drive times vary with route and traffic.