Flathead Lake State Park - Big Arm Unit

It would take big arms, indeed, to swim across Flathead Lake, the 28 by 15 mile beast of a pond in western Montana. But Flathead Lake is no Dead Sea (in fact it’s much bigger than that little speck of an ocean). This place is teeming with fish, and there’s no better spot to go to town trout huntin’ than Flathead Lake State Park's Big Arm area, located right by the long pebble beach of Big Arm Bay. Looking for something a little more epic than a (completely absolutely perfect) day of fishing and sunbathing? Scuba dive into the deep or watch the wild horses and bald eagles at Wild Horse Island, a quick hop from Big Arm. But Big Arm isn’t all surf with no turf! A 2.5 mile trail through juniper trees and ponderosa pines leads to a view of the Mission Mountains so stunning we dare you not to snap a picture.