We explore the rich history of railroads in the USA with a 3,000-mile journey from the Atlantic to the Pacific, passing through four time zones and twelve states. Starting at the Baltimore and Ohio Railroad Museum, the journey delves into the Transcontinental Railroad, a key engineering feat that united America. The adventure continues through New York’s Grand Central, Chicago, and Omaha, where the Union Pacific began, and highlights railroads’ role in the Civil War. In Denver, we learn about the impact of mining railroads on Native American communities. The route moves through the Rockies to Utah, where we visit the completion site of the Transcontinental Railroad in 1869. In Truckee, we reflect on the challenges faced by Chinese laborers, ending in Sacramento and taking a boat to San Francisco. This journey underscores the Transcontinental Railroad’s significance in shaping America.