The Bitterroot River is one of the most interesting fly fishing destination in Montana. To start, it flows south to north. It’s always fun to say you’re not going “down” the Bitterroot as you go south, you’re going “up’! As you head south, upriver, you’re flanked by the Sapphire Mountains, one of the most beautiful ranges in Montana. The Bitterroot River is a freestone river, deriving most of its streamflow from snowmelt, and averages about 700 trout per mile along its length, with trout over 23 inches being caught yearly. Great fly fishing and great scenery is the Bitterroot’s calling card.