Park To Park Itinerary

Park to Park

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Route Overview

Route A Casper to Thermopolis & Beyond

  • Distance: About 467 miles
  • Estimated Drive Time: 7.25 hours

Route B Casper to Dubois, Dubois to Moran & Beyond

  • Distance: About 424 miles
  • Estimated Drive Time: 7.5 hours


Follow along the old Park to Park Highway, a popular early 1900s route connecting several national parks. Start at the state line on I-25 near Cheyenne. At Exit 4, visit the Southeast Wyoming Welcome Center for a taste of Wyoming attractions, from a life-size Columbian mammoth to an escapable jail cell. After visiting the welcome center, head to Cheyenne Wyoming’s state capital. Rich with history from its development along the tracks of the Union Pacific Railroad in the mid-1800s, it’s home to numerous museums and the world’s largest outdoor rodeo, Cheyenne Frontier Days (July 22–31, 2016).


Continue north on I-25 through Wheatland. Recreation abounds in the area, including golfing fishing and boating. Stop by the Oregon Trail Ruts National Landmark on your way to Fort Laramie National Historic Site. Carved into stone, these ruts tell the stories of thousands of emigrants following the Oregon Trail in the mid-1800s. Fort Laramie, established as a fur-trading post in 1835 and revamped into a military post to protect trail travelers, was the first important stopping point for emigrants in Wyoming and also witnessed the Indian resistance.


It’s time to get wet and wild at Glendo State Park. Boaters, anglers and swimmers enjoy its sandy beaches and clear waters.
Charming small towns fill the next two stops. Douglas is home to the mythical jackalope. According to legend, after hunting some jackrabbits with his brother, Douglas Herrick took one to a taxidermy shop. As the rabbit lay near mule deer horns, inspiration hit Herrick, who mounted the crossbred critter.

The Laramie Mountains and Medicine Bow National Forest surround Glenrock, making it a perfect hub for fishing, camping and 
mountain biking. As you leave Glenrock, don’t forget to stop by the Ayres Natural Bridge, just five miles off I-25.  A remarkable natural bridge over La Prele Creek, the site is considered one of Wyoming's first tourist attractions and offers a beautiful spot for a picnic.



Located in the center of the state, Casper is Wyoming’s adventure capital and second largest city. Casper is Wyoming's adventure capital and second largest city. Casper is a mecca for world-class fly fishing on the North Platte River.  While there, visit the National Historic Trails Interpretive Center, commemorating the pioneers who traveled westward in the state’s early days. From Casper, deviate from I-25 and go northwest on Hwy 20. Known as one of Wyoming’s best walleye and trout fisheries, Boysen State Park is surrounded by the Wind River Indian Reservation. The reservoir is warm enough for all water sports and has an easily accessible swimming beach. Beginning in the town of Shoshoni nearby, the Wind River Canyon Scenic Byway puts you face to face with the windswept west.


At your next stop in Thermopolis, you'll find a menu of things to do, from horseback riding, golfing and whitewater rafting to the Wyoming Dinosaur Center. At the edge of town is Hot Springs State Park, built around the world’s largest single-mineral hot springs. The nearby Legend Rock Petroglyph Site invites visitors to view more than 300 petroglyphs spanning thousands of years.


Northwest of Thermopolis is the town of Cody, named after the famous Colonel William F. "Buffalo Bill" Cody. Known as the preferred gateway to Yellowstone, you’ll experience nightly summer rodeos, gunfight re-enactments and historic factoids at the Buffalo Bill Center of the West and the Museum of the Old West at Old West at Old Trail Town, where the lifestyle and history of the Frontier West is preserved through a rare collection of authentic structures and furnishings. Toward the end of the route, veer onto the Buffalo Bill Cody Scenic Byway, which starts about 25 miles west of Cody at the Shoshone National Forest border. This byway follows the north fork of the Shoshone River through the scenic Wapiti Valley to the east entrance of Yellowstone National Park, the nation's first national park and your final destination. Visit iconic spots like Old Faithful, Lower Falls and Yellowstone Lake while catching a glimpse of Yellowstone’s legendary wildlife.



From Casper, hop on I-25 and continue on Hwy 20/26. Once you reach Riverton, explore the city’s role as a historic meeting place at the 1838 Rendezvous Site, where famous mountain men like Kit Carson and Jim Bridger gathered to trade and socialize. Other points of interest include the Riverton Museum and the Wind River Heritage Center, where you can see taxidermy displays and a collection of traps dating back to the fur-trade era.


Head west on Hwy 26 to the Western-rooted town of Dubois. Stop at the Bighorn Sheep Interpretive Center to learn about one
of Wyoming’s most majestic inhabitants. Examine dioramas exhibiting the mammal’s summer and winter habitats; and schedule a tour of the Whiskey Mountain Habitat Area, home to the world’s largest wintering herd of Rocky Mountain bighorn sheep.


Drive along the jagged Wind River Range toward Moran, a community on the border of Grand Teton National Park. From here, you’ll take Hwy 191 (John D. Rockefeller Jr. Memorial Highway) past beautiful Jackson Lake toward Yellowstone’s south entrance. Have your camera ready — scenic photo opportunities abound on the last leg of this route, particularly of roaming bison and the towering Teton Range.

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