If you missed the re-run this month, you can also witness a Pony Express reenactment during Gold Rush Days at South Pass City Historic Site July 9–10.

Pony ExpressThe Pony Express only lasted 19 months, but it was the stuff of legends, so much so that for 37 years the National Pony Express Association has been holding annual re-rides across the U.S.

Once upon a time, Pony Express riders galloped on horseback across the plains from St. Joseph, Missouri to San Francisco, California, handing off of the mochila—mail bag—from one rider to the next.

This month, more than 600 riders will cover the 1,966-mile route along the Pony Express National Historic Trail from California to Missouri, passing through Wyoming’s Wind River Country today, Monday, June 20.

Two of those riders are Heidi Powell and her daughter, Vanessa, 19, of Riverton.

“It’s just really cool to be able to ride from Atlantic City to Jeffrey City,” Heidi, captain of the Rocky Ridge Division said, describing a quiet mountain pass in Fremont County on BLM Road 2302. “It’s too surreal to be able to explain, but to be able to ride your horse at night, and you’re just moving—you don’t have much to think about because there isn’t a lot of traffic—it’s just beautiful.”

Approximately 10 horses and six riders will cover the 77-mile stretch between Atlantic City and Jeffrey City tonight, and one of the key differences is that riders each only run a few miles—rather than the full stretch between stations—before handing off the mochila.

Atlantic City is scheduled to get the mail between 7:30 and 8 p.m. Monday, June 20, though the National Pony Express Association points out the mail can run up to two hours ahead or behind schedule. Interested viewers can watch the riders from town, as well as tracking them online thanks to the GPS unit riders will carry in addition to 900-1,000 U.S. Mail letters.

“Atlantic City is just a cool place to be anyway,” Heidi said. “It will still be daylight, so you will be able to see the riders, the trailers, the transition of the mochila.”

Follow the Moments That Make Wind River Country


See Wind River Country as it happens, on the trail, in town and out on the land. Follow along for real moments from real people, and share your own journey by tagging @windrivercountry.

If you're looking for authentic Wyoming charm, make your way to Dubois. 🏔️ Surrounded by the Wind River and Absaroka Mountains, this small town is packed with history, outdoor adventure and incredible views. While you're here, stop by the National Bighorn Sheep Center and the National Museum of Military Vehicles and enjoy easy access to Grand Teton and Yellowstone National Parks. Learn more in our bio. Photo: Brady McLean #WindRiverCountry #Wyoming #ThatsWY #Dubois #DuboisWY
We love fall colors...who else is ready? Photo: Scott Copeland #WindRiverCountry #Wyoming #ThatsWY
Sometimes all you need is a change of scenery. 🌄 Wind River Country is waiting. Photo: Davis Clem #WindRiverCountry #Wyoming #ThatsWY
"The landscape of the American West has to be seen to be believed and has to be believed to be seen." - N. Scott Momaday #WindRiverCountry #Wyoming #ThatsWY Photo: Wind River Country, Brady McLean
If you're ready to find room to breathe and space to roam, take a deep dive into the heart of Wind River Country. Start planning in our bio. #WindRiverCountry #Wyoming #ThatsWY Photo: Bill Sincavage
As we're approaching hunting season, there's no better photo opp than this. #WindRiverCountry #Wyoming #ThatsWY
While we've got lots of hidden gems in Wind River Country, Sinks Canyon is one of the coolest. It's located at the base of the Wind River Mountains, with landscapes that include foothills, forests, waterways and more. Plus, it's a short drive from Lander. Photo: Wind River Country #WindRiverCountry #Wyoming #ThatsWY
Saddle up and experience Wyoming the way it was meant to be experienced. 🐴 Guest ranches and outfitters throughout Wind River Country offer guided pack trips that take you deep into some of Wyoming's most breathtaking backcountry. Start planning your stay in our bio. Photo: Bill Sincavage #WindRiverCountry #Wyoming #ThatsWY
We love a good waterfall moment. Photo: Tori Jones #WindRiverCountry #Wyoming #ThatsWY