It will be close to 12 hours. It's 700 miles to Flint for us. Got some back roads to go on I guess. My husband and I are going. We grew up in Flint MI. And It's South of that. So were going to visit his sister. She lives in Cohoctah MI a small town not too far away from Brock. According to my sister in law. It will be a LONG drive.