American Bottoms 100

The American Bottoms 100 is a scenic 110-mile ultramarathon along the Mississippi River, starting and finishing in Columbia, Illinois. The course features a flat, out-and-back route that follows historic trails and passes notable sites such as Fort de Chartres and Piggott's Fort. Runners will traverse levees and back roads, with aid stations approximately every six miles.

The event offers a supportive environment with generous cut-off times, making it suitable for first-time hundred-milers or those seeking personal records. The race emphasizes simplicity and affordability, providing a unique opportunity to experience the historic American Bottom region through a challenging yet accessible ultramarathon. Visit the organization's website for the most recent information.