Nicolas McComber/iStockphoto.com
78.6 miles:
1 hours,
25 minutes
Between the Gallatin and Madison Mountain Ranges, the silver waters of the Gallatin River thread a path through the forest, next to the byway. Skirting Yellowstone National Park, forests of thick lodgepole pine and Douglas fir contain trails that lead to the fascinating Petrified Forest.

1
78.6 miles:
1 hours,
25 minutes
The journey begins at Gallatin Gateway and ends at the west entrance to Yellowstone National Park. Surrounded by dense forests and skyscraping mountains, the US-191 byway offers breathtaking scenery and access to the wilderness. Towering old-growth forests, the Gallatin River, and the Gallatin and Madison mountain ranges are panoramas perfect for photographs.