There are 248.97 miles from Houston to McKinney in northwest direction and 270 miles (434.52 kilometers) by car, following the I-45 route.
Houston and McKinney are 4 hours 56 mins far apart, if you drive non-stop.
This is the fastest route from Houston, TX to McKinney, TX. The halfway point is Buffalo, TX.
Houston, TX and McKinney, TX are in the same time zone (Central Daylight Time). Current time in both locations is 6:16 am.
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