There are 213.06 miles from Constantine to Au Sable in northeast direction and 285 miles (458.66 kilometers) by car, following the US-23 N route.
Constantine and Au Sable are 4 hours 53 mins far apart, if you drive non-stop .
This is the fastest route from Constantine, MI to Au Sable, MI. The halfway point is Vernon City, MI.
Constantine, MI and Au Sable, MI are in the same time zone (EDT). Current time in both locations is 3:49 am.
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