178 trips match your search
NameTrip #DatesSpaces
Hidden Trails of Cinque Terre and the Italian Riviera, Italy and France15630BSep 1–12, 2015Be First on Waiting List!
Wonderland Trail Loop, Mt. Rainier National Park, Washington15114ASep 1–11, 2015Waiting List
On Foot in Northern Spain: Camino de Santiago and Picos de Europa15765ASep 2–13, 2015Be First on Waiting List!
England's Coast-to-Coast Walk: Lakes, Dales, Moors, and More15770ASep 6–19, 20151
In the Shadow of Mount Olympus: Backpacking Olympic National Park, Washington15115ASep 6–13, 20151
Prince William Sound Wilderness Cruise, Alaska15020ASep 6–13, 2015Be First on Waiting List!
Isolated Island Wilderness: Backpacking Isle Royale National Park, Michigan15105ASep 7–13, 2015Be First on Waiting List!
Trail Work at Mt. Rainier National Park, Washington15277ASep 12–19, 2015Waiting List
Scuba Service in Monterey Bay's Kelp Forest, California15276ASep 12–19, 20154
High Peaks and Huts of the White Mountains, New Hampshire15304ASep 13–18, 2015Be First on Waiting List!
Waterfalls, Alpine Lakes, and Wildflowers: Day Hikes in Colorado's San Juan Mountains15237ASep 13–19, 2015Waiting List
Autumn in the Stehekin Valley, North Cascades National Park, Washington15239ASep 13–19, 2015Waiting List
Jewels of Croatia: Forests, Rivers, and Islands15785ASep 13–26, 2015Waiting List
Beginners Coastal Ramble Through Point Reyes National Seashore, California15169ASep 13–18, 2015Waiting List
Fantastic Four Pass Loop, Maroon Bells-Snowmass Wilderness, Colorado15120ASep 13–19, 2015Be First on Waiting List!
Amazing Acadia and the Rockbound Coast of Maine15238ASep 13–19, 2015Waiting List
Paddler's Paradise: Boundary Waters Canoe Area, Minnesota15193ASep 13–19, 2015Be First on Waiting List!
Easy Hiking Chamonix, France15775ASep 14–23, 20152
Trekking the Turquoise Coast of Turkey15790ASep 18–Oct 3, 2015Be First on Waiting List!
Fall Trail Work in the Red River Gorge, Kentucky15279ASep 19–26, 2015More than 5
Forbidden Heart of the Rainbow, Navajo Indian Reservation, Arizona and Utah15130ASep 20–26, 20152
Kayaking Cape Fear: Blackwater, Beach, and More, North Carolina15194ASep 20–26, 2015Waiting List
Kayak, Hike, and Raft: A Women's Adventure in Southern Oregon15250ASep 20–25, 2015Waiting List
50-Plus Pyramid Lake Service and Fun, Nevada15296ASep 20–26, 20152
Service Among Ancestral Puebloan Ruins, Utah15281ASep 20–26, 2015Waiting List
Grasslands Research in the Valles Caldera, New Mexico15280ASep 20–25, 2015Waiting List
Hiking the Greek Islands15795ASep 22–Oct 5, 20153
Magical Morocco: From Casbahs to Camels15685ASep 26–Oct 11, 2015Waiting List
Wild Trout Recovery in Northern New Mexico15282ASep 27–Oct 2, 2015Waiting List
Autumn Hikes in the Colorful Catskill Mountains, New York15240ASep 27–Oct 3, 2015More than 5
Fall Service at Bear Run Nature Reserve and Fallingwater, Pennsylvania15287ASep 27–Oct 3, 2015Waiting List
Georgia Gems: St. Mary's, Cumberland Island, and Okefenokee Swamp15197ASep 27–Oct 3, 20155
Naples to Brindisi: Secrets of Southern Italy15800ASep 27–Oct 8, 2015Waiting List
Gitche Gumee Gambol: Backpacking Pictured Rocks National Lakeshore, Michigan15106ASep 28–Oct 2, 20152
Sierra Club Outdoors National Conference at Clair Tappaan Lodge15995AOct 2–4, 2015Be First on Waiting List!
Fall Foliage Hiking in Vermont's Green Mountain National Forest15242AOct 4–9, 2015Waiting List
Secrets of Kanab Canyon, Grand Canyon National Park, Arizona15131AOct 4–11, 2015Waiting List
Martha's Vineyard Service, Massachusetts15297AOct 4–10, 2015Waiting List
Piedras Blancas Light Station Service, Big Sur, California15285AOct 4–10, 2015Waiting List
Sea and Service at Myrtle Beach State Park, South Carolina15286AOct 4–10, 2015Waiting List
Acadia National Park Service, Maine15283AOct 4–10, 2015Be First on Waiting List!
Treasures of Sicily, Italy15805AOct 10–21, 2015Waiting List
Autumn Alpine Trek in Bhutan15695AOct 10–27, 20151
Borneo Explorer, Malaysia15700AOct 11–24, 2015Waiting List
New York City Parks Service at the Historic Bartow-Pell Conservancy15290AOct 11–18, 20155
Current River Canoeing, Ozark National Scenic Riverways, Missouri15195AOct 11–15, 2015Be First on Waiting List!
50-Plus Service at Clair Tappaan Lodge, Tahoe National Forest, California15288AOct 11–16, 20152
Hike, Bike, and Kayak in Vietnam15705AOct 17–31, 2015Be First on Waiting List!
Habitat and History at Fort Ord, Monterey, California15291AOct 18–25, 20155
Caribbean Island Kayaking, Florida Keys and Dry Tortugas, Florida15196AOct 18–24, 2015Be First on Waiting List!
Hot Springs, Falling Water, and Service in Saline Valley, California15289AOct 18–24, 2015Be First on Waiting List!
Autumn Glory in Great Smoky Mountains National Park, Tennessee15244AOct 18–23, 20154
Ancestral Pueblos of Chaco Canyon and Northern New Mexico15247AOct 19–25, 2015Be First on Waiting List!
Mt. Everest Lodge Trek, Nepal15710AOct 22–Nov 13, 2015More than 5
Sea and Service at Point Reyes National Seashore, California15292AOct 24–31, 2015Be First on Waiting List!
Top of Texas, Guadalupe Mountains National Park15298AOct 24–31, 2015Waiting List
Focus on Birds in Ecuador, Hummingbird Heaven15830AOct 25–Nov 11, 20152
Jewels of the Grand Canyon, Arizona15133AOct 25–31, 2015Waiting List
Trekking the Patagonia Circuit, Argentina and Chile15835AOct 26–Nov 6, 2015Be First on Waiting List!
Women Backpacking in the Grand Canyon, Arizona15134AOct 31–Nov 7, 20154
Marvelous Muleshoe Ranch Service, Gailuro Mountains, Arizona15293ANov 1–7, 2015Waiting List
Machu Picchu Eco-Lodge Trek, Peru15840ANov 2–12, 2015Be First on Waiting List!
Machu Picchu Eco-Lodge Trek, Peru15840BNov 4–14, 2015Waiting List
Wheels Over Cuba: Conservation at a Crossroads15720ANov 5–15, 2015More than 5
Puerto Rico: From the Coast to the Mountains15031ANov 8–15, 2015Waiting List
Florida's Cool Springs and Wild Rivers15198ANov 15–21, 2015Be First on Waiting List!
Wheels Over Cuba: Conservation at a Crossroads15720BNov 19–29, 20154
Enchanting Galápagos: A Holiday Adventure in Ecuador16505ADec 20, 2015–Jan 1, 2016Waiting List
Natural Highlights of Costa Rica16510ADec 21, 2015–Jan 2, 20161
Exploring Exotic Ecuador: Amazon, Andes, and the Coast16515ADec 22, 2015–Jan 3, 2016More than 5
Best of Belize: Rainforest, Ruins, and Reefs.16520ADec 26, 2015–Jan 2, 2016More than 5
Active Adventure on the Seventh Continent, Antarctica16555ADec 28, 2015–Jan 7, 2016Waiting List
Sun, Service and Whales, Maui, Hawaii16405AJan 3–10, 2016More than 5
Edge of the Everglades, Florida16416AJan 10–15, 2016More than 5
Everglades Eco Adventure, Florida16415AJan 10–15, 2016More than 5
Treasures of Thailand: Bangkok, Chiang Mai, and the Andaman Sea16500AJan 11–24, 2016More than 5
Gliding Through Glacier National Park, Montana16430AJan 16–23, 2016More than 5
Islands in the Sun: Kayaking Cayo Costa State Park, Florida16417AJan 24–30, 2016More than 5
Hiking in Paradise, Maui and Kauai16400AJan 28–Feb 7, 2016Waiting List
Hiking the Natural Beauty of Southern Costa Rica and Northern Panama16530AJan 30–Feb 11, 2016More than 5
Marvelous Muleshoe Ranch Service, Gailuro Mountains, Arizona16450AJan 31–Feb 6, 2016More than 5
Extra-Virgin Island Sun, Sand, and Sport, St. John, U.S. Virgin Islands16406AJan 31–Feb 6, 20162
Kilimanjaro and Safari, Tanzania16535AFeb 6–21, 2016Waiting List
Treasures, Tigers, and the Taj Mahal, India16570AFeb 7–20, 2016More than 5
Work and Fun in Sunny St. John, U.S. Virgin Islands16407AFeb 7–13, 2016Waiting List
Devilish Tasmania16540AFeb 7–18, 20162
Winter Wildlife and Hot Springs, Yellowstone National Park, Wyoming16431AFeb 10–17, 2016More than 5
Altar Valley Wildlife Habitat, Arizona16456AFeb 14–20, 2016More than 5
Journey Through Untamed Wilderness: Alaska Dogsled16432AFeb 14–20, 20165
Snowshoeing Grand Teton National Park, Wyoming16433AFeb 14–21, 2016More than 5
Mountains, Forests, and Beaches of New Zealand's South Island16525AFeb 20–Mar 1, 2016More than 5
Reclaiming the Rosillos, Texas16458AFeb 20–27, 20165
Invasive Plant Control in Anza-Borrego Desert State Park, California16457AFeb 20–27, 2016More than 5
Audubon Research Ranch Service, Appleton-Whittell Research Ranch, Arizona16459AFeb 21–27, 2016More than 5
Trekking the Patagonia Circuit, Argentina and Chile16550AFeb 22–Mar 4, 2016More than 5
Big Island Sampler: Hawaii Volcanoes National Park and the Kona Coast, Hawaii16408AFeb 24–Mar 3, 2016More than 5
Altar Valley Wildlife Habitat, Arizona16460AFeb 28–Mar 5, 2016More than 5
Maine Woods Classic Cross Country Ski and Snowshoe16444AFeb 28–Mar 5, 2016More than 5
Classic Hikes in Big Bend National Park, Texas16425AFeb 28–Mar 5, 2016Waiting List
Caribbean Sun and Sea at Vieques Island National Wildlife Refuge, Puerto Rico16409AMar 6–12, 2016More than 5
Journey Through Untamed Wilderness: Alaska Dogsled16445AMar 6–12, 20165
Natural Highlights of Costa Rica16565AMar 6–18, 2016More than 5
Birding Belize: Rainforest, Ruins, and Reefs16575AMar 7–16, 2016More than 5
Vietnam Adventure16580AMar 9–24, 2016Waiting List
Magic in the Water, Florida16418AMar 13–19, 20165
Springtime Service in Pinnacles: America's Newest National Park, California16462AMar 13–19, 2016More than 5
Critical Bird Habitat Restoration on Mauna Kea, Big Island, Hawaii16410AMar 13–19, 20163
Saving the San Pedro River, Arizona16461AMar 13–19, 2016More than 5
Women Backpacking the Wonders of the Grand Canyon, Arizona16420AMar 27–Apr 2, 2016More than 5
Natural and Historical Highlights of Israel16560AMar 29–Apr 11, 2016More than 5
Exploring North Holland by Bike and Barge16585AApr 6–16, 2016Waiting List
Borneo Explorer, Malaysia16590AApr 10–23, 2016Waiting List
Machu Picchu Eco-Lodge Trek, Peru16595AApr 19–29, 20163
National Outings Training Trip - Desert Backpacking16999AApr 20–24, 2016Waiting List
Springtime in Western Turkey16605AApr 23–May 6, 2016More than 5
Exploring the Hidden Kingdom, Bhutan16600AApr 23–May 6, 2016More than 5
A Bavarian Spring: From Rothenburg to the Danube, Germany16610AApr 27–May 9, 20161
Hiking the Mountains to the Sea in Northern Greece16615AMay 2–13, 2016More than 5
England's Coast-to-Coast Walk: From the Irish Sea to the North Sea16620AMay 9–22, 2016Waiting List
Jewels of Croatia: Forests, Rivers, and Islands16625AMay 15–28, 2016More than 5
The Enchanted Galápagos Islands, Ecuador16630AMay 16–29, 20161
Mountain Vistas and Moorish Legacy in Andalucía, Southern Spain16635AMay 16–27, 2016More than 5
Hiking Japan's Ancient Buddhist Trails, Rainforests, and Volcanoes, Kyushu16640AMay 16–28, 2016More than 5
Walking the Franciscan Trail, Umbria, Italy16645AMay 17–28, 2016Waiting List
Upper Dolpo Trek, Nepal16650AMay 18–Jun 24, 20163
Mountains, Lochs, and Glens: The West Highland Way, Scotland16655AMay 23–Jun 2, 2016Waiting List
Vienna to Prague: Walking the Czech Greenways, Austria and Czech Republic16705AMay 26–Jun 8, 2016More than 5
Hidden Trails of Cinque Terre and Italian Riviera, France and Italy16660AMay 31–Jun 11, 20164
Botswana and Zimbabwe: A Living Eden16665AJun 2–14, 2016More than 5
Walking Through History in the Cotswolds, England16670AJun 3–12, 2016More than 5
In the Shadow of the Alps: Light Hiking and Culture in Italy and France16675AJun 13–24, 2016More than 5
Stone Age to New Age: Sacred Sites and Mysticism in Ireland16680AJun 17–29, 2016Waiting List
Easy Hiking the Dolomites, Italy16685AJun 20–Jul 3, 2016More than 5
Hiking the Alps of Bavaria and Tyrol, Germany and Austria16690AJun 21–Jul 2, 2016More than 5
Eiger and Jungfrau Up Close, Switzerland16695AJun 26–Jul 4, 2016More than 5
Women's Adventure in the Andes, Peru16865AJun 29–Jul 9, 2016More than 5
Hiking the Italian Western Alps16700AJun 29–Jul 9, 2016More than 5
Fire, Ice, and Water, Iceland16760AJul 8–22, 2016More than 5
Dolomiti di Brenta: Trekking the Trentino Alps, Italy16765AJul 13–21, 2016More than 5
Exploring Norway's Fjords and Glaciers16770AJul 13–23, 2016More than 5
Tropical Trails, Turtles, and Toucans of Costa Rica16850AJul 17–26, 2016More than 5
Volcanic Vacation: Hut-to-Hut Trekking in Iceland16775AJul 26–Aug 6, 2016More than 5
England's Coast-to-Coast Walk: From the Irish Sea to the North Sea16780AJul 31–Aug 13, 2016More than 5
Way North: Hut-to-Hut Trekking in Norway and Sweden16785AAug 1–12, 2016More than 5
Focus on Birds in Brazil's Pantanal and Ubatuba16870AAug 14–29, 2016More than 5
Quintessential Scotland: From Edinburgh to the Highlands16790AAug 15–27, 2016More than 5
National Outings Training Trip - Lodge-Based Day Hiking16998AAug 16–20, 2016More than 5
Adventures in the Scottish Highlands16795AAug 29–Sep 8, 2016More than 5
On Foot in Northern Spain: Picos de Europa and the Camino de Santiago16900AAug 31–Sep 11, 2016More than 5
Hiking Slovenia: From the Julian Alps to the Adriatic Sea16800ASep 1–12, 2016More than 5
Hiking the Peaks and Valleys of the Dolomites, Italy16805ASep 5–16, 2016More than 5
Pampas, Andes, and Waterfalls in Argentina16875ASep 6–18, 2016More than 5
Jewels of Croatia: Forests, Rivers, and Islands16810ASep 11–24, 2016More than 5
A Taste of Tuscany and Cinque Terre, Italy16815ASep 11–22, 2016More than 5
Magnificent Madagascar16710ASep 11–26, 2016More than 5
Provence d'Azur, France16820ASep 12–21, 2016More than 5
Hiking the Pembrokeshire Coastal Path, Wales16825ASep 16–23, 2016More than 5
Hiking the Greek Islands16830ASep 20–Oct 3, 2016More than 5
A Taste of the South Downs, England16997ASep 23–26, 2016More than 5
Naples to Brindisi: Secrets of Southern Italy16835ASep 25–Oct 6, 2016More than 5
Ocean Views and Hiking Along Jersey's Coastal Path, British Channel Islands16840ASep 26–Oct 3, 2016More than 5
Galápagos and Macchu Pichu: The Best of Ecuador and Peru16880AOct 11–23, 2016More than 5
Scenic China: Valleys, Vistas, and Villages16725AOct 17–29, 2016More than 5
Land of the Thunder Dragon: Bhutan16730AOct 21–Nov 2, 2016More than 5
Trekking the Turquoise Coast of Turkey16845AOct 21–Nov 5, 2016More than 5
Highland Trekking in Ethiopia's Simien Mountains16720AOct 22–Nov 4, 2016More than 5
Hike, Bike, and Kayak in Vietnam16735AOct 22–Nov 5, 2016More than 5
Treasures of Tunisia: From Roman Ruins to the Sahara16715AOct 23–Nov 3, 2016More than 5
Halfway Around Kanchenjunga, Nepal16740AOct 23–Nov 19, 2016More than 5
Trekking the Patagonia Circuit, Argentina and Chile16885AOct 24–Nov 4, 2016More than 5
Oaxaca: Celebrate Day of the Dead in the Cultural Heart of Mexico16855AOct 26–Nov 6, 2016More than 5
Machu Picchu Eco-Lodge Trek, Peru16890ANov 1–11, 2016More than 5
Cuba by Bicycle: Culture and Conservation at a Crossroads16755ANov 3–13, 2016More than 5
Wildlife and Timelessness: Mythical Travels in South India16750ANov 22–Dec 8, 2016More than 5
Birds and Butterflies in Tropical Panama16860ADec 10–18, 2016More than 5
Cruising the Enchanted Galápagos Islands, Ecuador16895ADec 19–31, 2016More than 5
Natural Highlights of Costa Rica17705ADec 20, 2016–Jan 1, 2017More than 5
Southeast Asia Adventure: Northern Laos and Cambodia17500AJan 9–24, 2017More than 5

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