- Gibraltar Island2
- Gifford Pinchot National Forest1
- Gila1
- Giles8
- Gill Brook Trail to Indian Head1
- Gilpin2
- Glacier5
- Glacier Bay National Park, Bartlett Cove Area, along SE shore of Bartlett Cove1
- Glacier National Park, Hanging Gardens, Logan Pass1
- Glacier National Park, Logan Pass, trail to saddle of Clements and Oberlin Mountains1
- Glacier National Park, McDonald Creek1
- Glacier National Park, Piegan Pass1
- Glacier National Park, Rising Sun Lodge, St. Mary Valley1
- Glacier National Park, Snyder Lake2
- Glacier National Park, Sprague Creek1
- Glacier National Park, at base of Mount Brown, along highway 1 mile north of head of Lake McDonald1
- Glacier National Park, open field at south end of Lake McDonald1
- Gladwin1
- Gleason's Bog, near Douglas Lake1
- Glen Haven1