Whitewater Rafting the Gallatin River
The Gallatin River offers some of the most exciting whitewater in southwest Montana, with rapids that are mostly Class II to III, with one Class IV rapid, through the Gallatin Canyon. Local outfitters run guided half-day and full-day trips, providing all the gear, safety instruction, and expertise needed for a thrilling ride through this dramatic canyon.
Trips are available for a range of experience levels, including gentler float sections well suited to families with kids, so there's an option whether you're chasing big rapids or a scenic paddle. Many outfitters also offer combo packages pairing a morning on the river with an afternoon barbecue. Most people raft the Gallatin for the excitement of the rapids. Book early in the season, as summer weekends fill up quickly with both locals and visitors eager to get out on the water.
What the canyon is like
The Gallatin has more than 20 named rapids below Moose Creek Campground, including Screaming Left, Thumper and Straightaway. Most are Class II to III. House Rock is the most technical at Class IV, and it starts the Mad Mile, about a mile of nonstop rapids.
US 191 follows the river, with plenty of put-ins and take-outs. You can scout most rapids from the road.
When to go
Spring runoff makes the river high, fast and very cold, around 38 degrees. July through September the water is clearer and calmer. Season dates vary by outfitter and snowpack, so ask when you book.
