Gallatin River Guides. Gear and Guides in Big Sky, Yellowstone & Southwest Montana. Since '84: Visit us as a customer. Return as a good friend.

Montana fly fishing trips, guides, and gear

Gallatin River Guides is Big Sky's home to honest fishing info, guided fly fishing trips and instruction on the waters of Montana and Yellowstone Park, renowned customer service, and the gear for near and far.

Montana Fishing Trips and Vacations. Rivers we fish:

  • Missouri

    Missouri River flow: 3250 cfs

    Missouri river Rainbow trout

    The Mighty Mo, a river that thinks it’s a spring creek. Don’t be fooled by the slow current and peaceful surroundings, my friend: This is big water with lots of big fish. Read more.

  • Spring Creeks
    Angler on a Paradise Valley spring creek

    Year-round hatches. Stalking sipping trout. And scenery to die for — that is fishing the spring creeks with Gallatin River Guides. We love these waters and guide them regularly. Read more.

  • Upper Madison

    Upper Madison River flow: 948 cfs

    Upper Madison trout

    Famous fly fishing waters. Our guides love this water for its beauty, it’s dry fly fishing, and it’s technicality. Caddis, stoneflies, mayflies, and midges dominate this river, making for hungry and happy trout. Read more.

  • Lower Madison

    Lower Madison River flow: 1240 cfs

    Lower Madison trout

    Float fishing abounds on this local river. Thirty minutes from our shop and offering hatches of caddis, mayflies, and stoneflies, this is a great beginners river holding some big fish for those looking for a challenge. Read more.

  • Gallatin

    Gallatin River flow: 411 cfs

    Gallatin river in the Fall

    Big Sky Montana’s home water. Fly fish right out our back door. With over 3,500 trout per mile, this river is why we are here. Fish it with us and discover it’s treasures and it’s secrets. Read more.

  • Yellowstone

    Yellowstone River flow: 1800 cfs

    Yellowstone River at 26-Mile access

    Home to four species of trout, some of which are trophy brown trout and many of which are native Yellowstone cutthroat. Near Livingston and Yellowstone Park we fish this beautiful river. Read more.

  • Yellowstone National Park
    Cutthroat Trout

    Yellowstone National Park is home to several streams that feature native Yellowstone Cutthroat trout. Slough Creek, Pelican Creek, the Lamar, Gardiner, and Yellowstone rivers all harbor these beautiful, easy-going fish. But, be ready, because they may be easy-going, but they’re ready for a tussle once caught. Read more.

Fishing is what we do.
And been doing it right for over 30 years.

Gallatin River Guides is Big Sky's year-round fishing-only shop and outfitter serving the Gallatin, the Madison, and Yellowstone National Park. We fish a ton. Period. Fishing is what we do - not skiing, not biking, not backpacking. We do one thing and we do it well. From beginner to expert, from the Madison to the spring creeks, GRG is your source for fly fishing in Big Sky.


Shop Online

Winter catch
Where We're Fishing Now

Gallatin: Big Sky and Bozeman

Upper Madison: Ennis area

Lower Madison: Bozeman

Yellowstone: West Yellowstone

Fly Pattern Hot Sheet

Size 18 Zebra on Upper Madison

Size 8 Sculpzilla on Gallatin

Size 20 BWO cripple on DePuy's

Size 18 JC Low Rider on Yellowstone River

Montana Women's Fly Fishing School

Kara shows some love . . .

Join us for a fun-filled, no-pressure week of fishing, learning, and exploring some of the best waters on the planet. September in Montana is beautifu on the Gallatin, Madison, and Yellowstone Rivers. Join us at The Montana Women’s Fly Fishing School, based in Big Sky and Bozeman, Montana, is a week-long fly fishing trip with professional guides and instructors. Join fellow women anglers and women guides and fish the Gallatin, Madison, and Yellowstone Rivers. Sound awesome? Well, we think it is awesome. For Montana fly fishing trips and Big Sky, Montana fly fishing this is a great week. How can it not be a great trip with women fly fishing near Bozeman, Montana. 

Visit the school’s website for more information and then contact us today to sign up or ask questions. 

Fall Montana Fly Fishing Trips

Plenty of flies to choose from . . .

Only about six weeks left for the best fall Montana fly fishing. Desiring to hunt big brown trout? Always wanted to fish the Upper Madison and have it to yourself? Then come this fall to Big Sky and Bozeman Montana for fly fishing. We are expecting some of the best fall fishing in recent memory. Our Big Sky fishing guide trips get you on the water when the fishing is the best. Our fun, patient, and expert professional Montana fly fishing guides are ready to take you. Contact us today to book your Big Sky fly fishing guide or your Bozeman fly fishing trip. Fly fish with fishing guides in Montana for the Upper Madison, the Yellowstone, and the Gallatin River for anytime of year. Fish now, or start planning your winter fly fishing trip. 

Need to stock up on gear or want a screaming deal?


Montana Fly Fishing Guide School

Montana fly fishing guide

October session is right around the corner and only has a few spots left. The 2016 dates for the fishing guide school near Bozeman and Big Sky are set! Take our school to guide on the Madison, Yellowstone, or Gallatin Rivers or dreamed of calling your boss and telling him or her to, well, you know...then come take our fishing guide school near Bozeman, Montana. We fish the Yellowstone, Madison, Missouri Rivers and the waters near Big Sky, Bozeman, and Helena Montana. It is built on the foundation of great teaching from our world-class instructors, our dynamic and challenging course curriculum, and the best classroom on the planet with the rivers, spring creeks, and lakes of Montana. If you want to make a living doing guided fly fishing trips on the Madison, Yellowstone, Gallatin, and Missouri Rivers, then take our guide school. 

Visit "".