There are 387.34 miles from San Marcos to Amherst in northwest direction and 462 miles (743.52 kilometers) by car, following the US-84 W route.
San Marcos and Amherst are 8 hours 14 mins far apart, if you drive non-stop .
This is the fastest route from San Marcos, TX to Amherst, TX. The halfway point is Tuscola, TX.
San Marcos, TX and Amherst, TX are in the same time zone (CDT). Current time in both locations is 12:00 pm.
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