There are 189.11 miles from Houston to San Antonio in west direction and 195 miles (313.82 kilometers) by car, following the I-10 route.
Houston and San Antonio are 3 hours 28 mins far apart, if you drive non-stop.
This is the fastest route from Houston, TX to San Antonio, TX. The halfway point is Schulenburg, TX.
Houston, TX and San Antonio, TX are in the same time zone (Central Daylight Time). Current time in both locations is 6:38 am.
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