Pony Express trail · Background
What the Pony Express actually was
Eighteen months, a private company, a financial disaster, and a legend out of all proportion to any of it.
Position Missouri to California, 1860 to 1861 · approximate, no coordinate on record
It was a private mail service, not a government one. The Central Overland California and Pikes Peak Express Company set it up to win a federal mail contract, and the plan was to prove that a central route could carry mail year round faster than the southern stagecoach line.
The method was relays. A rider covered roughly seventy five to a hundred miles, changing horses every ten to fifteen miles at a station, then handed the mochila to the next rider. That is why the stations sit so close together along the Utah desert stretch, and why there had to be so many of them.
It worked. Coast to coast message time fell to about ten days, which at the time was extraordinary. It also lost money continuously, because the cost of maintaining several hundred stations and horses across two thousand miles of unsettled country was never going to be covered by letter postage.
The transcontinental telegraph reached completion in October 1861 and the service stopped two days later. Total operating life: eighteen months. The place it holds in American memory has almost nothing to do with its commercial history and everything to do with what it looked like.
This is remote, unpaved country with no fuel, no water and thin phone coverage for a hundred miles. Carry more water than you think you need, tell somebody your route, and do not attempt the crossing in a low car after rain. The BLM manages most of the road; call the Salt Lake Field Office for current conditions rather than trusting any page, including this one.