Discover the top attractions on a road trip between Collinsville, Illinois and Saint Peters, Missouri. From the iconic Gateway Arch to ancient Cahokia Mounds, explore history, culture, and nature along the way.

Planning a road trip from Collinsville, Illinois to Saint Peters, Missouri? Check out our breakdown of different routes, distances, times, and costs based on current gas prices. Find the best route for your next adventure!

Discover the best routes and driving times from Collinsville, IL, to St. Peters, MO. Whether you prefer speed or scenery, learn how traffic patterns can impact your journey. Safe travels!