The Millers are attempting to water ski the length of the Ohio River … all nine-hundred and 80 miles of it.
Mark and Brandon, and their father will be taking turns being pulled by the boat and their mother is in charge of driving. They estimate they'll travel at least 150 miles each day.
The trip will last about six days and they are expecting to use around 400 gallons of gas to get to the end of the river.
For information on how you can donate to their cause visit the https://www.dav.org/MARATHONSKI/Default.aspx website.