The Overland Trail (also known as the Overland Stage Line) was a stagecoach and wagon trail in the American West during the 19th century. While portions of the route had been used by explorers and trappers since the 1820s, the Overland Trail was most heavily used in the 1860s as an alternative route to the Oregon, California, and Mormon trails through central Wyoming. The Overland Trail was famously used by the Overland Stage Company owned by Ben Holladay to run mail and passengers to Salt Lake City, Utah, via stagecoaches in the early 1860s. Starting from Atchison, Kansas, the trail descended into Colorado before looping back up to southern Wyoming and rejoining the Oregon Trail at Fort Bridger. The stage line operated until 1869 when the completion of the First Transcontinental Railroad eliminated the need for mail service via Thais' stagecoach. Mostly used during the gold rush of 1848.
In 1857, the United States Post Office Department extended bids for mail service along what became known as the "southern route" from Memphis, Tennessee, to San Francisco, California, through New Mexico and Arizona. The contract was given to the Butterfield Overland Mail Company and service ran until the Civil War started in 1861. Wells Fargo was the primary lender to the company and took control when it suffered financial difficulties in 1859. After the southern route was disbanded, the Overland Mail Company moved its operations to the central line between Salt Lake City and Sacramento.