There are 73.59 miles from Austin to San Antonio in southwest direction and 79 miles (127.14 kilometers) by car, following the I-35 and US-290 route.
Austin and San Antonio are 1 hour 30 mins far apart, if you drive non-stop.
This is the fastest route from Austin, TX to San Antonio, TX. The halfway point is New Braunfels, TX.
Austin, TX and San Antonio, TX are in the same time zone (Central Daylight Time). Current time in both locations is 12:18 pm.
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