| Sant Jeroni |  | Montserrat Monastery |  |  | Hike | 
          
                  | Saratoga Springs |  | Death Valley National Park |  |  | Hike | 
          
                  | Saratoga Springs |  | Death Valley National Park |  |  | Hike | 
          
                  | Schonchin Butte |  | Lava Beds National Monument |  |  | Hike | 
          
                  | Schulman Grove |  | Ancient Bristlecone Pine Forest |  |  | Hike | 
          
                  | Seltun Geothermal Area |  | Seltún Geothermal Area |  |  | Hike | 
          
                  | Sentiero Azzurro trail |  | Cinque Terre |  |  | Hike | 
          
                  | Sentinel Dome / Taft Point |  | Yosemite Valley |  |  | Hike | 
          
                  | Sipapu Bridge |  | Natural Bridges National Monument |  |  | Hike | 
          
                  | Skaftafellsjökull |  | Skaftafell - Svartifoss and Skaftafellsjökull |  |  | Hike | 
          
                  | Skogafoss |  | Skogafoss |  |  | Hike | 
          
                  | Skull Rock Trail |  | Joshua Tree National Park |  |  | Hike | 
          
                  | Skunk Cabbage Trail at Mt. Revelstoke |  | Mt. Revelstoke / Glacier National Parks |  |  | Hike | 
          
                  | Sky Rock |  | Bishop |  |  | Hike | 
          
                  | Skyline Trail |  | Cape Breton Highlands National Park / Cabot Trail |  |  | Hike | 
          
                  | Skyline Trail to Golden Gate Trail |  | Mount Rainier National Park |  |  | Hike | 
          
                  | Smith Rock State Park |  | Solartown |  |  | Hike | 
          
                  | Soberanes Cove in Garrapata State Park |  | Carmel and Side Trips |  |  | Hike | 
          
                  | Sol Duc Falls / Lover’s Lane |  | Olympic National Park |  |  | Hike | 
          
                  | South Cove Trail - Cape Arago |  | Sunset Bay State Park |  |  | Hike | 
          
                  | South Kaibab Trail |  | Grand Canyon - South Rim |  |  | Hike | 
          
                  | South Lake to Long Lake |  | Bishop |  |  | Hike | 
          
                  | South Lake to Long Lake plus Chocolate Lakes |  | Bishop |  |  | Hike | 
          
                  | South Shore and Bird Island trails |  | Carmel |  |  | Hike | 
          
                  | Southern shore of Mono Lake |  | Mono Lake |  |  | Hike | 
          
                  | Spring Grotto |  | Anza-Borrego State Park |  |  | Hike | 
          
                  | Spruce Tree House Trail |  | Mesa Verde National Park |  |  | Hike | 
          
                  | Steens Mountain summit |  | Steens Mountain Scenic Byway |  |  | Hike | 
          
                  | Stovepipe Wells Village Hotel |  | Death Valley National Park |  |  | Hike | 
          
                  | Sulphur Bank, Steam Vents, and Ilahi Trail |  | Hilo (Big Island) |  |  | Hike | 
          
                  | Sunrise Lakes |  | Yosemite - Tuolumne Meadows |  |  | Hike | 
          
                  | Sunrise Point to Sunset Point |  | Bryce Canyon National Park |  |  | Hike | 
          
                  | Sunset Hill |  | Hilo (Big Island) |  |  | Hike | 
          
                  | Sunset Point to Sunrise Point |  | Bryce Canyon National Park |  |  | Hike | 
          
                  | Sunset Point to Sunrise Point |  | Bryce Canyon National Park |  |  | Hike | 
          
                  | Sunset Point to Sunrise Point |  | Bryce Canyon National Park |  |  | Hike | 
          
                  | Svartifoss |  | Skaftafell - Svartifoss and Skaftafellsjökull |  |  | Hike | 
          
                  | Swift Current Lake Nature Trail - Many Glacier area |  | Waterton-Glacier National Park |  |  | Hike | 
          
                  | Tablelands |  | Gros Morne National Park (Trout River) |  |  | Hike | 
          
                  | Tabor Canyon |  | Loreto |  |  | Hike | 
          
                  | Taft Point and Fissures, Sentinel Dome, and Glacier Point |  | Yosemite National Park |  |  | Hike | 
          
                  | Tahquitz Canyon |  | Indian Wells (Palm Springs) |  |  | Hike | 
          
                  | Tasch |  | Zermatt and the Matterhorn |  |  | Hike | 
          
                  | Tenaya Lake Loop |  | Tenaya Lake (Yosemite) |  |  | Hike | 
          
                  | The "Beach" |  | Bishop |  |  | Hike | 
          
                  | The Dragon's Teeth |  | Wailea |  |  | Hike | 
          
                  | The Dune |  | Jockey Ridge State Park |  |  | Hike | 
          
                  | The Sinks to Upper Canyon Creek Lake |  | Sinks to Upper Canyon Creek Lake |  |  | Hike | 
          
                  | The Slot |  | Anza-Borrego State Park |  |  | Hike | 
          
                  | Thunder River Falls |  | Day 8 and 9 - 119 Mile Rapid (119) to Thunder River Camp (Mile 134) |  |  | Hike | 
          
                  | To Gimmelwald and Murren |  | Stechelberg, Gimmelwald, and Murren |  |  | Hike | 
          
                  | Top of Punta Pitt |  | San Cristobal Island |  |  | Hike | 
          
                  | Torrey Pines State Beach |  | Campland on the Bay and San Diego Side Trips |  |  | Hike | 
          
                  | Torrey Pines State Park |  | Campland on the Bay and San Diego Side Trips |  |  | Hike | 
          
                  | Torrey Pines State Park |  | San Diego |  |  | Hike | 
          
                  | Tower Trail |  | Devils Tower National Monument |  |  | Hike | 
          
                  | Trail to Beach |  | Oregon Dunes National Recreation Area |  |  | Hike | 
          
                  | Trail to Lighthouse |  | Heceta Head Lighthouse |  |  | Hike | 
          
                  | Transept Trail |  | Grand Canyon - North Rim |  |  | Hike | 
          
                  | Trous de Saumons |  | Cape Breton Highlands National Park / Cabot Trail |  |  | Hike | 
          
                  | Tuolumne Grove Trail |  | Yosemite Valley |  |  | Hike | 
          
                  | Tuolumne Meadows |  | Yosemite - Tuolumne Meadows |  |  | Hike | 
          
                  | Tuolumne Meadows |  | Yosemite - Tuolumne Meadows |  |  | Hike | 
          
                  | Tuolumne Meadows |  | Tuolumne Meadows |  |  | Hike | 
          
                  | Twin Falls |  | Hana |  |  | Hike | 
          
                  | Ubehebe Crater |  | Death Valley National Park |  |  | Hike | 
          
                  | Ubehebe Crater |  | Death Valley National Park |  |  | Hike | 
          
                  | Ubehebe Crater Rim |  | Death Valley National Park |  |  | Hike | 
          
                  | Ubehebe Crater Rim |  | Death Valley National Park |  |  | Hike | 
          
                  | Upper Canyon Creek Lake to Boulder Creek Lakes |  | Upper Canyon Creek Lake to Boulder Creek Lakes |  |  | Hike | 
          
                  | Upper Cathedral Valley Lookout |  | Cathedral Valley |  |  | Hike | 
          
                  | Upper Eagle Falls and Eagle Lake |  | South Lake Tahoe |  |  | Hike | 
          
                  | Upper Geyser Basin |  | Yellowstone National Park |  |  | Hike | 
          
                  | Upper Muley Twist |  | Notom Bullfrog Road, Upper Muley Twist, and the Burr Trail |  |  | Hike | 
          
                  | Upper South Desert Overlook |  | Cathedral Valley |  |  | Hike | 
          
                  | Urbina Bay |  | Galapagos - Isabela Island (Day 3) |  |  | Hike | 
          
                  | Valley of Dreams |  | Bisti Badlands |  |  | Hike | 
          
                  | Valley of the Goblins (evening walk) |  | Goblin Valley State Park |  |  | Hike | 
          
                  | Valley of the Goblins (sunrise stroll) |  | Goblin Valley State Park |  |  | Hike | 
          
                  | Vernal and Nevada Falls |  | Yosemite National Park |  |  | Hike | 
          
                  | Vernal Falls |  | Yosemite Valley |  |  | Hike | 
          
                  | Vernal Falls |  | Yosemite Valley |  |  | Hike | 
          
                  | Viking Village |  | Vestrahorn |  |  | Hike | 
          
                  | Virginia Lakes Trail |  | Bridgeport |  |  | Hike | 
          
                  | Viti Crater |  | Lake Mývatn Geothermal Area |  |  | Hike | 
          
                  | Wahweap Hoodoos |  | Cottonwood Canyon Road, Wahweap Hoodoos, and Old Paria |  |  | Hike | 
          
                  | Waihee Ridge Trail |  | Wailea |  |  | Hike | 
          
                  | Waikamoi Ridge Trail |  | Hana |  |  | Hike | 
          
                  | Wallace Creek Interpretive Trail |  | Carrizo Plains National Monument |  |  | Hike | 
          
                  | Wash in Chuckwalla Springs |  | Lake Powell - Chuckwalla Springs Cove |  |  | Hike | 
          
                  | Washington Park from Japanese Gardens to Portland Zoo |  | Portland |  |  | Hike | 
          
                  | Watchman Peak |  | Crater Lake National Park |  |  | Hike | 
          
                  | Waterfalls in campground |  | J. T. Cheeseman Provincial Park |  |  | Hike | 
          
                  | Waterpocket Fold |  | Lake Powell - Halls Creek Bay |  |  | Hike | 
          
                  | Weeping Rock Trail |  | Zion National Park |  |  | Hike | 
          
                  | West Bluff Trail / East Bluff Trail |  | Devils Lake State Park |  |  | Hike | 
          
                  | White Rocks Amphitheater |  | Snow Canyon State Park |  |  | Hike | 
          
                  | Wild Pacific Trail - Big Beach Section |  | Ucluelet |  |  | Hike | 
          
                  | Wild Pacific Trail - Big Beach Section |  | Ucluelet |  |  | Hike | 
          
                  | Wild Pacific Trail - Lighthouse Loop |  | Ucluelet |  |  | Hike |