What is the distance between Marietta Ga and Rex GA?

43 miles taking this route:

1. Take I-75 SOUTH from Marietta to I-285 ATLANTA BYPASS off EXIT 259; follow signs to I-285 WEST BYPASS.
2. Take I-285 around ATLANTA to I-675 SOUTH to MACON off EXIT 52.
3. Take I-675 SOUTH to Rex. The exit for REX is EXIT 2.