The drive from Grottoes to St. Louis is approximately 800 miles. You will travel west through West Virginia, Kentucky, and Illinois before entering Missouri. The trip takes about 12 hours. St. Louis is known for the Gateway Arch and its rich history. You will pass through several major cities along the way.
Total Distance: 1,300 km driving; 1,000 km air distance.
Be prepared for long stretches of highway.
April to October for pleasant weather and outdoor activities.