Tags
- A
- Agua Hedionda Lagoon
- Alameda Creek
- Albany, California
- Alta, California
- American Discovery Trail
- Angeles National Forest
- Angel Island
- Ansel Adams Wilderness
- Antelope Valley California Poppy Reserve
- Anza-Borrego Desert State Park
- Apache
- Arastradero Preserve
- Arizona
- Arizona Trail
- Auburn State Recreation Area
- Bair Island
- Bay Area Ridge Trail
- Berkeley
- Berryessa Snow Mountain National Monument
- Big Basin Redwoods State Park
- Bigfoot Trail
- Bike
- Bill Williams River National Wildlife Refuge
- Bluff Lake
- Bolsa Chica Ecological Reserve
- Bolsa Chica State Beach
- Border Field State Park
- Bureau of Land Management
- California
- California Coastal Trail
- California Department of Fish and Wildlife
- California Department of Transportation
- Canyon de Chelly National Monument
- Carrizo Plain
- Casa Grande Ruins National Monument
- Cascade–Siskiyou National Monument
- Castle Crags
- Catalina Island Conservancy
- Central Coast
- Channel Islands National Marine Sanctuary
- Channel Islands National Park
- China Camp State Park
- Chino Hills State Park
- Chiricahua National Monument
- Clark Kerr
- Cleveland National Forest
- Coast Dairies State Park
- Coconino National Forest
- Colorado River
- Coronado National Forest
- Coronado National Memorial
- Cosumnes River Preserve
- Crystal Cove State Park
- Cuyamaca Rancho State Park
- Dead Horse Ranch State Park
- Death Valley National Park
- Del Norte Coast Redwoods State Park
- Desolation Wilderness
- Dick Smith Wilderness
- D. L. Bliss State Park
- Dockweiler State Beach
- Don Edwards San Francisco Bay National Wildlife Refuge
- Donner Memorial State Park
- East Bay
- East Bay Regional Park District
- Elden Pueblo
- Eldorado National Forest
- Elkhorn Slough
- Elkhorn Slough National Estuarine Research Reserve
- Emerald Bay State Park
- Estado de Occidente
- Estero Bay
- Farallon Islands
- Federal government of the United States
- Fitzgerald Marine Reserve
- Fort Ord
- Fossil Creek
- Garrapata State Park
- Gaviota State Park
- Giant Sequoia National Monument
- Gila River
- Glen Canyon National Recreation Area
- Golden Gate National Recreation Area
- Grand Canyon National Park
- Gray Whale Cove State Beach
- Great Valley Grasslands State Park
- Guadalupe-Nipomo Dunes
- Guadalupe-Nipomo Dunes National Wildlife Refuge
- Gulf of California
- Half Moon Bay State Beach
- Hammond Trail
- Havasu National Wildlife Refuge
- Headwaters Forest Reserve
- Hearst Castle
- Hearst San Simeon State Park
- Hendy Woods State Park
- High Sierra Trail
- Hike
- Hiking
- History of California before 1900
- History of Los Angeles
- Hollenbeck Canyon Wildlife Area
- Hubbell Trading Post National Historic Site
- Imperial Valley
- Independence Trail
- International Standard Book Number
- Inyo Mountains
- Inyo National Forest
- Jedediah Smith Memorial Trail
- Jedediah Smith Redwoods State Park
- Jerome State Historic Park
- John Muir National Historic Site
- John Muir Trail
- Joshua Tree National Park
- Julia Pfeiffer Burns State Park
- Kaibab National Forest
- King Range
- Kings Canyon National Park
- Klamath National Forest
- Kofa National Wildlife Refuge
- Laguna Beach State Marine Reserve
- Lake Havasu
- Lake Mead National Recreation Area
- Lake Perris
- Lake Tahoe Basin Management Unit
- Land trust
- Lassen National Forest
- Lassen Volcanic National Park
- Leo Carrillo State Park
- Life
- Lighthouse Field State Beach
- Limekiln State Park
- Los Angeles
- Los Angeles State Historic Park
- Los Padres National Forest
- Lost Dutchman State Park
- Lower Klamath National Wildlife Refuge
- Luna Lake
- Malibu Creek State Park
- Manzanar
- Marina State Beach
- Marsh Creek State Park
- Martial Cottle Park
- McArthur–Burney Falls Memorial State Park
- Mendocino Headlands State Park
- Mendocino National Forest
- Mendota, California
- Merced National Wildlife Refuge
- Mexicali
- Mexico–United States border
- Mission San Francisco de Asís
- Mission San Gabriel Arcángel
- Mist Trail
- Modoc National Forest
- Mojave National Preserve
- Monterey Bay National Marine Sanctuary
- Montezuma Castle National Monument
- Moonlight Beach
- Morro Strand State Beach
- Mount Diablo
- Mount Tamalpais State Park
- Muir Woods National Monument
- Municipal
- Municipal Park
- National Conservation Area
- National conservation lands
- National Estuarine Research Reserve
- National forest
- National Historic Landmark
- National Historic Site
- National Historic Trail
- National monument
- National Natural Landmark
- National Park Service
- National Recreation Area
- National Register of Historic Places
- National Wild and Scenic Rivers System
- National Wilderness Preservation System
- National Wildlife Refuge
- Native Americans in the United States
- Natural Bridges State Beach
- Natural Bridges State Marine Reserve
- Nature park
- New
- New Brighton State Beach
- New Mexico
- New Spain
- Nogales, Arizona
- North Table Mountain Ecological Reserve
- Old Sacramento State Historic Park
- Old Spanish Trail
- Organ Pipe Cactus National Monument
- Otay Mountain Wilderness
- Pacifica State Beach
- Pacific Crest Trail
- Pahrump Valley
- Palomar Mountain
- Papago Park
- Path
- Paths
- Pedestrian
- Pepperwood Preserve
- Petrified Forest National Park
- Pfeiffer Big Sur State Park
- Phoenix Mountains Preserve
- Picacho Peak State Park
- Pinnacles National Park
- Pio Pico State Historic Park
- Pipe Spring National Monument
- Pismo State Beach
- Pixley National Wildlife Refuge
- Placerita Canyon State Park
- Plumas National Forest
- Point Cabrillo Light
- Point Dume
- Point Lobos
- Point Sal State Beach
- Point Sur State Historic Park
- Prairie Creek Redwoods State Park
- Prescott National Forest
- Presidio of San Francisco
- Protected area
- Quechan
- Red Rock State Park
- Redwood National and State Parks
- Refugio State Beach
- Regional park
- Richmond Greenway
- Riordan Mansion State Historic Park
- Robert Louis Stevenson State Park
- Russian Gulch State Park
- Saguaro National Park
- Salton Sea State Recreation Area
- Salt Point State Park
- San Bernardino National Forest
- San Bruno Mountain State Park
- Sanctuary Forest
- San Elijo Lagoon
- San Felipe Creek
- San Francisco
- San Francisco Bay
- San Francisco Bay Area
- San Francisco Bay Trail
- San Francisco Maritime National Historical Park
- San Joaquin River National Wildlife Refuge
- San Juan Bautista State Historic Park
- San Luis National Wildlife Refuge
- San Luis Reservoir
- San Onofre State Beach
- San Rafael Wilderness
- Santa Cruz Island
- Santa Cruz River
- Santa Monica Mountains National Recreation Area
- Santa Monica State Beach
- Santa Rosa Plateau
- Scripps Coastal Reserve
- Seacliff State Beach
- Sequoia National Forest
- Sequoia National Park
- Shasta, California
- Shasta–Trinity National Forest
- Sheep Hole Mountains
- Sierra High Route
- Silver Strand
- Sinaloa
- Sonoma Coast State Park
- Southern California
- South Mountain Park
- South Yuba River State Park
- Spain
- Spanish missions in California
- Spur Trail
- Stanislaus National Forest
- Stevens Creek
- Stone Lake
- Stone Lakes National Wildlife Refuge
- Sugarloaf Ridge State Park
- Sunset Crater
- Tahoe National Forest
- Tahoe Rim Trail
- Texas Longhorn
- The Californias
- The Forest of Nisene Marks State Park
- The Nature Conservancy
- The Trust for Public Land
- The Wildlands Conservancy
- Tijuana Slough National Wildlife Refuge
- Tomales Bay
- Tomales Bay State Park
- Tombstone Courthouse State Historic Park
- Tonto National Forest
- Tonto National Monument
- Torrey Pines State Natural Reserve
- Trail
- Trinity Alps Wilderness
- Tubac, Arizona
- Tucson, Arizona
- Tuzigoot National Monument
- United States National Marine Sanctuary
- University of California Natural Reserve System
- Upper Newport Bay
- Van Damme State Park
- Ventana Wilderness
- Verde River
- Walnut Canyon National Monument
- Watts Towers
- Whiskeytown–Shasta–Trinity National Recreation Area
- White Rock
- Wilder Ranch State Park
- Wildwood Canyon
- Willcox Playa
- Will Rogers State Beach
- Wupatki National Monument
- Yosemite National Park
- Yuma Territorial Prison