- Menlo Park, 111 Pope Street, (North Palo Alto)1
- Merced1
- Merced River, near Bear Creek bridge on Highway 140.1
- Mesa Grande, San Diego1
- Middle Honcut Road, west of Honcut, along the edge of Middle Honcut Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville.1
- Mill Creek San B mt1
- Mill Creek near Healdsburg1
- Mill Valley5
- Millwood1
- Mirror Lake, Yosemite National Park1
- Mission Dolores1
- Mission Hill1
- Mission Valley Canyon, 15 miles east of San Diego1
- Mist Trail between Vernal & Nevada Falls, Yosemite Park1
- Mitchell Canyon, Mt. Diablo1
- Modoc12
- Modoc National Forest, Warner Mts. At Margin of Clear Lake.1
- Modoc National Forest. Upper Rush Creek Campground.1
- Mokelumne Wilderness & adjacent Toiyabe Nat'l Forest. On the saddle immediately east of Winnemucca Lake.1
- Mono63