How many miles from Detroit MI To Gulf Shores AL?

It is about 1000 miles.

The route

1. Take I-75 SOUTH through Michigan and Ohio to I-71 SOUTH to Louisville in northern Kentucky.
2. Take I-71 SOUTH to I-265/KY-865 GENE SNYDER FREEWAY SOUTH at EXIT 9A outside of Louisville.
3. Take I-265 around Louisville to I-65 SOUTH to Nashville at EXIT 10-B.
4. Take I-65 SOUTH through Kentucky and Tennessee, through Nashville, TN and Birmingham and Montgomery, AL to AL-287 GULF SHORES PARKWAY to BAY MINETTE and RABUN.
5. Turn left off the exit ramp onto AL-287 SOUTH.
6. Take AL-287 SOUTH to AL-59 SOUTH. Continue straight on AL-59 SOUTH.
7. Take AL-59 SOUTH to Gulf Shores.