How many driving miles is it from St. Louis MO and Mackinaw City MI?

Answer 1

775 miles taking this route:

1. Take I-70 EAST, from St. Louis (toward INDIANAPOLIS), to I-465 SOUTH at EXIT 69 in Indiana.
2. Take I-465 (becomes EAST, and then NORTH), around INDIANAPOLIS, to I-69 NORTH to FT. WAYNE at EXIT 37.
3. Take I-69 NORTH (& EAST, past Lansing, Michigan) to I-75 NORTH to SAGINAW at EXIT 133 in Flint, MICHIGAN.
4. Take I-75 NORTH to Mackinaw City.