There are 365 miles from San Diego to Tucson in east direction and 411.71 miles (662.58 kilometers) by car, following the I-8 route.
San Diego and Tucson are 5 hours 24 mins far apart, if you drive non-stop.
This is the fastest route from San Diego, CA to Tucson, AZ. The halfway point is .
San Diego, CA and Tucson, AZ are in the same time zone (PDT). Current time in both locations is 3:47 am.
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