The Gunsight Pass Trail in Glacier National Park is 19.7-20.6 mile point-to-point trail starting on Going to the Sun Road between Logan Pass and St Mary Lake and ending onGoing to the Sun Roadat the Lake McDonald Lodge.
The park service busses run regularly throughout the summer are a simple way to access both trailheads without parking multiple cars.
Overnight camping in Glacier National Park requires a backcountry permit.