February 23, 2026

Thermopolis, Wyoming, has long been a hidden gem in the world of fly fishing. While serious anglers have long known about the legendary Bighorn River fly fishing, the broader travel community is only recently discovering what makes this destination so special.

And while the trout fishing alone is reason enough to visit, Thermopolis offers far more than just world-class water.

If you’re planning a fly fishing trip to Wyoming, here’s why Thermopolis deserves to be at the top of your list.

World-Famous Hot Springs at Hot Springs State Park

Beyond the blue-ribbon waters of the Bighorn River, the most iconic attraction in Thermopolis is the legendary hot springs.

The Big Spring inside Hot Springs State Park is considered the largest single mineral hot spring in the world, flowing at approximately 3.6 million gallons per day at a constant 135°F. The mineral-rich waters cascade through striking travertine terraces before cooling to a comfortable 104°F in the state bath house, where visitors can soak year-round.

After a full day on the river, there are few things better than easing into warm mineral water as the Wyoming sunset settles over the canyon walls.

Wyoming’s Historic Buffalo Herd

While exploring the park, visitors can also observe a resident buffalo herd that has called the area home for over a century. Established in 1916 as part of Wyoming’s conservation efforts, the herd helps preserve the heritage of the American West.

The bison are easily viewed from your vehicle or along the park’s hiking trails, offering incredible photo opportunities and a memorable wildlife experience — all just minutes from the river.

Discover Prehistoric Wyoming at the Wyoming Dinosaur Center

Another must-see attraction is the renowned Wyoming Dinosaur Center in nearby East Thermopolis.

The museum features more than 50 mounted skeletons — both authentic fossils and detailed replicas — discovered throughout Wyoming. One of its most impressive displays is a massive 106-foot-long Supersaurus skeleton, one of the largest ever found.

For those wanting a hands-on experience, the center also operates an active dig site just minutes away, where visitors can join paleontologists in unearthing real fossils.

It’s a fascinating way to experience Wyoming’s ancient history between fishing days.

Recent Fly Fishing Report: A Surprisingly Hot Winter on the Bighorn River

Typically, winter in Wyoming brings extended cold and snow. This year, however, winter has barely made an appearance.

While mornings have still required a little grit, anglers willing to layer up have been rewarded with exceptional fishing. The Bighorn River has been producing consistent action all winter long, and we expect early dry fly hatches if the mild trend continues.

If you’ve been waiting for the right time to plan a Thermopolis, Wyoming fly fishing trip — this may be it.

Plan Your Thermopolis Fly Fishing Getaway

Between legendary Bighorn River trout fishing, the world’s largest mineral hot spring, roaming buffalo, and one of the top dinosaur museums in the country, Thermopolis offers far more than just a fishing trip — it delivers a complete Wyoming experience.

Ready to see it for yourself?

Drop us a line and join us on the river.