The drive from River Forest to Oklahoma City is about 780 miles. You will take I-55 S to St. Louis, then I-44 W all the way to Oklahoma City. This is a long journey taking approximately 12 hours. You will traverse the heart of the Midwest and the Great Plains.
Total Distance: 1,250 km driving distance; 1,050 km straight-line air distance.
Plan for a hotel stay in Springfield, Missouri.
Spring or fall to avoid summer heat and winter storms.