There are 33.47 miles from Trenton to Alton in northwest direction and 48 miles (77.25 kilometers) by car, following the IL 4 route.
Trenton and Alton are 1 hour 2 mins far apart, if you drive non-stop.
This is the fastest route from Trenton, IL to Alton, IL. The halfway point is Troy, IL.
Trenton, IL and Alton, IL are in the same time zone (CDT). Current time in both locations is 1:46 am.
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