Decide how long it is going to take to get to Mount Rushmore by using a map of the United States or online at MapQuest.com.
Decide how long your vacation will be, factoring in driving time and how many days you want to stay there.
Set aside enough money to cover the cost of gas, hotel rooms, food and miscellaneous items such as the fee to get into Mount Rushmore National Memorial.
Make your way to South Dakota using your map of the United States or your car's GPS system.
Once in South Dakota, take Interstate 90 to Rapid City.
Get off the Interstate in Rapid City and take Highway 16 southwest into the Black Hills National Forest.
Take Highway 244 west and follow signs to Mount Rushmore National Monument.