The Pony Express lasted only 18 months before the telegraph replaced it in 1861. But volunteers never let it end. Every June, more than 750 riders saddle up for the Pony Express Re-Ride, carrying real, postmarked mail 1,966 miles across eight states from Missouri to California in ten days, day and night. Riders still gallop the trail, passing the mail pouch horse to horse, just like 1860.