308 trips match your search
NameTrip #DatesSpaces
To Hell and Back: Service in Hells Canyon, Idaho16077AApr 9–16, 2016Be First on Waiting List!
Mystery of the Rainbow, Navajo Nation, Arizona and Utah16027AApr 9–16, 20161
New York City Forestry Service, New York16078AApr 10–17, 2016Be First on Waiting List!
Borneo Explorer, Malaysia16590AApr 10–23, 2016Be First on Waiting List!
Kayaking Florida's Magical Rivers and Springs16045AApr 10–16, 20161
Somewhere Over the Rainbow, Navajo Nation, Arizona and Utah16029AApr 16–23, 2016Be First on Waiting List!
Spring Hiking in Sedona, Arizona16050AApr 17–22, 2016Waiting List
Swamp, Sea, and Big Trees: Kayaking South Carolina16046AApr 17–23, 2016More than 5
Service and History at Shenandoah Valley Battlefields, Virginia16080AApr 17–23, 2016Be First on Waiting List!
Springtime Hiking and Birding in Big Bend National Park, Texas16051AApr 18–24, 2016Waiting List
Machu Picchu Eco-Lodge Trek, Peru16595AApr 19–29, 2016Waiting List
CANVOS CPR & WFA @ the California Alpine Lodge in Mill Valley, CA16991AApr 20–22, 2016More than 5
National Outings Training Trip - Desert Backpacking16999AApr 20–24, 2016Waiting List
Exploring the Hidden Kingdom, Bhutan16600AApr 23–May 6, 20164
Mammoth Cave National Park Service, Kentucky16079AApr 24–30, 2016Waiting List
Sacred Navajo Mountain Rainbow Trail, Arizona16030AApr 24–30, 20161
Redrock Eden, Capitol Reef National Park, Utah16083AApr 24–30, 2016Waiting List
Barrier Island Bliss: Sun, Surf, and Service at Cayo Costa, Florida16082AApr 24–30, 2016Waiting List
A Bavarian Spring: From Rothenburg to the Danube, Germany16610AApr 27–May 9, 2016Be First on Waiting List!
Wilderness First Responder Recertification at Clair Tappaan Lodge in Norden, CA16992AApr 30–May 2, 20165
Galiuro Mountains and Redfield Canyon Wilderness: The Place Time Forgot, Arizona16032AMay 1–7, 20161
Backpacking Paria Canyon: A Week of Visual Surprises, Arizona and Utah16031AMay 1–7, 2016Waiting List
Hiking the Mountains to the Sea in Northern Greece16615AMay 2–13, 2016Be First on Waiting List!
Sea and Service at Point Reyes National Seashore, California16084AMay 7–14, 20161
Spring Service in Arches National Park, Utah16085AMay 8–14, 2016Be First on Waiting List!
Capitol Reef Natural History Base Camp, Utah16040AMay 9–15, 2016Waiting List
England's Coast-to-Coast Walk: From the Irish Sea to the North Sea16620AMay 9–22, 20161
Backpacking Paria Canyon: A Week of Visual Surprises, Arizona and Utah16031BMay 10–16, 2016Be First on Waiting List!
Redrock Canyons of Escalante, Utah16033AMay 14–20, 2016Waiting List
Jewels of Croatia: Forests, Rivers, and Islands16625AMay 15–28, 20161
Wildlife and Photography Cruise, Prince William Sound, Alaska16005AMay 15–22, 2016Be First on Waiting List!
Moab Adventure for Women: Hike, Raft, and Ride in Southeast Utah16053AMay 15–21, 2016Waiting List
Farm Service on Martha's Vineyard, Massachusetts16087AMay 15–21, 20161
Waterfall Magic in the Columbia River Gorge, Oregon and Washington16054AMay 15–20, 2016Be First on Waiting List!
Santa Rosa Island Service, Channel Islands National Park, California16086AMay 15–21, 2016Waiting List
Mountain Vistas and the Medieval Legacy in Andalucía, Southern Spain16635AMay 16–27, 20163
The Enchanted Galápagos Islands, Ecuador16630AMay 16–29, 20161
Due to lodging considerations, available space is reserved for One Female
Hiking Japan's Ancient Buddhist Trails, Rainforests, and Volcanoes, Kyushu16640AMay 16–28, 2016Be First on Waiting List!
Walking the Franciscan Trail, Umbria, Italy16645AMay 17–28, 2016Waiting List
Upper Dolpo Trek, Nepal16650AMay 18–Jun 24, 20161
Natural History of Arches and Island in the Sky, Arches and Canyonlands National Parks, Utah16041AMay 18–25, 20161
Cycling Missouri's Historic Katy Trail16190AMay 21–28, 20161
Kayaking Coastal Virginia: Blackwater and Beach16048AMay 22–28, 20164
Service at Antietam National Battlefield, Maryland16088AMay 22–28, 20161
New York City Park Service Trip, New York16090AMay 22–29, 2016More than 5
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, 20163
Rafting the San Juan River, Utah16060AMay 26–30, 2016More than 5
Natural History of Arches and Island in the Sky, Arches and Canyonlands National Parks, Utah16041BMay 27–Jun 3, 20165
Service in the Footsteps of Geronimo, Arizona16091AMay 28–Jun 4, 20165
Rafting the Wild and Free Yampa, Dinosaur National Monument, Colorado and Utah16061AMay 30–Jun 3, 20162
Hidden Trails of Cinque Terre and the Italian Riviera, France and Italy16660AMay 31–Jun 11, 2016Be First on Waiting List!
Botswana and Zimbabwe: A Living Eden16665AJun 2–14, 2016Be First on Waiting List!
Walking Through History in the Cotswolds, England16670AJun 3–12, 2016Be First on Waiting List!
Gems of Kauai: Rainforests, Canyons, and the Deep Blue Sea, Hawaii16021AJun 4–12, 2016Waiting List
Monhegan Island: Jewel of the Sea, Maine16250AJun 5–11, 20161
Lake Michigan Bike and Hike, Sleeping Bear Dunes National Lakeshore, Michigan16191AJun 5–11, 2016More than 5
Backpacking the Brooks Range at the Moment of Spring, Arctic National Wildlife Refuge, Alaska16006AJun 5–15, 2016Be First on Waiting List!
Star Party on the North Rim, Grand Canyon National Park, Arizona16251AJun 5–11, 2016Be First on Waiting List!
Musk Ox Magic at Cape Krusenstern National Monument, Alaska16007AJun 5–11, 2016Waiting List
Chaco Canyon Service, New Mexico16252AJun 11–18, 20163
Grand Canyon Garden Party, Arizona16254AJun 12–18, 20164
Whales, Water, and Wildlife of the San Juan Islands, Washington16221AJun 12–17, 2016Be First on Waiting List!
Hiking and Service on Oahu, Hawaii16022AJun 12–18, 2016Be First on Waiting List!
Beginner Backpack by the Sea, Point Reyes National Seashore, California16110AJun 12–18, 2016Waiting List
In the Shadow of the Alps: Light Hiking and Culture in Italy and France16675AJun 13–24, 20162
Coastal Plain to Arctic Peaks Wildlife Safari, Arctic National Wildlife Refuge, Alaska16008AJun 13–24, 2016Be First on Waiting List!
Stone Age to New Age: Sacred Sites and Mysticism in Ireland16680AJun 17–29, 2016Waiting List
Leisurely Loops Among the Lakes of Plumas County, California16177AJun 18–24, 2016More than 5
Golden Trout Gambol, California16111AJun 18–25, 2016More than 5
Packrafting and Hiking Wrangell-St. Elias National Park, Alaska16009AJun 18–25, 20164
Wanderlust and Wildflowers in Washington's North Cascades16223AJun 19–25, 20164
Archaeology and Trail Work in Dixie National Forest, Utah16255AJun 19–25, 2016More than 5
Painting Along the Sierra Trails, Tahoe National Forest, California16222AJun 19–25, 2016More than 5
Tastes and Tales of the Appalachian Trail, Great Smoky Mountains National Park, North Carolina and Tennessee16100AJun 19–25, 2016Be First on Waiting List!
Trail Service in Kachemak Bay State Park, Alaska16010AJun 19–25, 20161
Easy Hiking the Dolomites, Italy16685AJun 20–Jul 3, 2016Waiting List
Hiking the Alps of Bavaria and Tyrol, Germany and Austria16690AJun 21–Jul 2, 2016More than 5
World-Class Whitewater: Rafting the Middle Fork of the Salmon River, Idaho16062AJun 24–29, 2016Waiting List
Family Fun and Service at Tahoe National Forest, California16205AJun 25–Jul 1, 2016More than 5
Family Trekking at Tamarack: Bear Valley, California16206AJun 26–Jul 1, 2016More than 5
Eiger and Jungfrau Up Close, Switzerland16695AJun 26–Jul 4, 20164
Yoga and Hiking in the Redwoods, Marin County, California16224AJun 26–Jul 2, 2016More than 5
Trail Service in Kachemak Bay State Park, Alaska16010BJun 27–Jul 3, 20162
Hiking the Italian Western Alps16700AJun 29–Jul 9, 2016More than 5
Family Rafting in Dinosaur National Monument, Utah16207AJul 1–4, 2016More than 5
Explore Glacier Bay by Yacht, Alaska16011AJul 2–10, 2016Waiting List
Bob Marshall Wilderness Backpacking and the Chinese Wall, Montana16155AJul 3–9, 2016Waiting List
Natural History of Mt. Rainier Base Camp, Mt. Rainier National Park, Washington16178AJul 3–9, 2016Waiting List
Royce Lakes and Humphreys Basin, John Muir Wilderness, California16112AJul 3–9, 20165
Journey Around Post Peak to Lake 10005, Ansel Adams Wilderness, California16113AJul 4–9, 20165
Fire, Ice, and Water, Iceland16760AJul 8–22, 2016Waiting List
Trail Work in California's Trinity Alps16256AJul 9–16, 2016Be First on Waiting List!
Remote Wilderness Canoeing in Woodland Caribou Provincial Park, Ontario16195AJul 9–17, 20163
Majestic Mountains and Grand Scenery of the Eastern Sierra, California16175AJul 10–16, 2016More than 5
Summer in the Stehekin Valley, North Cascades National Park, Washington16226AJul 10–16, 2016Be First on Waiting List!
Puffins, Whales, and Coastal Trails: Hiking Newfoundland's East Coast Trail, Canada16225AJul 10–17, 20164
Signature Day Hikes in Yosemite's Tuolumne Meadows, California16179AJul 10–16, 2016More than 5
Sierra Nevada Adventures for Families with Teens, Tahoe National Forest, California16208AJul 10–16, 2016More than 5
Green River Family Rafting Through Desolation and Gray Canyons, Utah16210AJul 11–15, 2016Be First on Waiting List!
Cape Cod Family Adventure, Massachusetts16209AJul 11–15, 2016More than 5
Dolomiti di Brenta: Trekking the Trentino Alps, Italy16765AJul 13–21, 2016More than 5
Exploring Norway's Fjords and Glaciers16770AJul 13–23, 2016Waiting List
Exploring Beartooth Glaciers, Montana16156BJul 14–20, 20164
Stehekin Valley Backpacking, Washington16145AJul 15–22, 2016Be First on Waiting List!
Service with the Seven Devils, Hells Canyon Wilderness, Idaho16257AJul 16–23, 2016More than 5
Family Ramble, Rocky Mountain National Park, Colorado16211AJul 16–23, 2016More than 5
Tropical Trails, Turtles, and Toucans of Costa Rica16850AJul 17–27, 2016More than 5
Just for Grandparents and Grandkids, Tahoe National Forest, California16212AJul 17–22, 20162
Alpine Lakes in the Emigrant Wilderness, Sierra Nevada Mountains, California16114AJul 17–25, 2016Be First on Waiting List!
Southern Yosemite Wilderness Medley, California16115AJul 17–24, 2016Be First on Waiting List!
Evolution Valley Ascension, Kings Canyon National Park and John Muir Wilderness, California16116AJul 20–28, 20162
Grizzlies, Glaciers, and Climate Change: Dayhiking in Glacier National Park, Montana16227AJul 23–30, 20164
Wandering in Bear Lakes Basin, John Muir Wilderness, California16117AJul 23–Aug 1, 2016More than 5
Highlights of Southeastern Yosemite: Waterfalls, Peaks, and Domes, California16119AJul 24–31, 20162
Exploring Beartooth Glaciers, Montana16156AJul 24–30, 2016Waiting List
Lodge Adventure in America's Alps, North Cascades, Washington16228AJul 24–30, 2016More than 5
Alpine Adventure in the Ansel Adams Wilderness, California16118AJul 24–30, 2016Waiting List
Sprucing Up Newfoundland's East Coast Trail, Canada16258AJul 24–31, 20163
Multigenerational Teen Service in Yosemite's Tuolumne Meadows, California16213AJul 24–30, 2016Waiting List
Sierra Vistas and Family Fun in Tahoe National Forest, California16214AJul 24–29, 2016More than 5
Tramping Around Mineral King, Sequoia National Park, California16121AJul 25–31, 2016Be First on Waiting List!
Green River Family Rafting Through Desolation and Gray Canyons, Utah16210BJul 25–29, 2016More than 5
Volcanic Vacation: Hut-to-Hut Trekking in Iceland16775AJul 26–Aug 6, 2016Be First on Waiting List!
Wild and Scenic Rogue River Family Rafting, Oregon16215AJul 28–31, 2016More than 5
Lake Superior Service, Isle Royale National Park, Michigan16259AJul 29–Aug 6, 2016Waiting List
Journey Through Evolution, South Lake to North Lake, Kings Canyon National Park, California16122AJul 29–Aug 6, 20163
Across the Continental Divide in Rocky Mountain National Park, Colorado16157AJul 29–Aug 3, 20162
Food, Farms, and Wine: An Active Tour of Localvore Vermont16180AJul 31–Aug 6, 2016More than 5
England's Coast-to-Coast Walk: From the Irish Sea to the North Sea16780AJul 31–Aug 13, 2016Waiting List
Hiking Crested Butte, Colorado16230AJul 31–Aug 6, 20163
Music in the Mountains: Hikes and Concerts in Stanislaus and Humboldt-Toiyabe National Forests, California16231AJul 31–Aug 6, 2016More than 5
Women's Backpack in the Emigrant Wilderness, California16123AJul 31–Aug 7, 2016Waiting List
Big Lakes and Big Sky: Day Hikes in the Wind River Range, Wyoming16229AJul 31–Aug 6, 20163
Gros Ventre Wilderness Service, Wyoming16260AJul 31–Aug 6, 2016Be First on Waiting List!
Way North: Hut-to-Hut Trekking in Norway and Sweden16785AAug 1–12, 20165
Family Fun with Llamas in the Wyoming Wilderness, Teton National Forest, Wyoming16216AAug 1–5, 20163
Wilderness Backpacking in Kluane National Park, Yukon Territory16012AAug 2–9, 20162
Northern Yosemite Lakes, Meadows, and Peaks Adventure, California16295AAug 2–14, 2016Waiting List
Wilderness Cruise on Alaska's Inside Passage16013AAug 4–13, 20161
Hiking High: Mammoth Crest to the Silver Divide, John Muir Wilderness, California16124AAug 5–9, 20165
Wind River Range Restoration, Wyoming16261AAug 5–14, 2016More than 5
Hiking the Muir Trail from Devils Postpile to Tuolumne Meadows, Yosemite National Park, California16296AAug 5–16, 20161
Kayaking the Na Pali Coast, Kauai, Hawaii16023AAug 6–12, 2016Be First on Waiting List!
Canadian Rockies Van Venture: Banff, Lake Louise, and Jasper, Alberta16232AAug 6–13, 20164
Women's Backpacking in the Sierra Alps: Yosemite National Park and Hoover Wilderness, California16126AAug 6–14, 2016More than 5
Southern Colorado Sampler, Weminuche Wilderness and Great Sand Dunes National Monument16158AAug 6–14, 20164
Peaks and Passes in Yosemite and the Clark Range, California16125AAug 6–14, 2016More than 5
Work and Play at Clair Tappaan Lodge, Tahoe National Forest, California16264AAug 7–12, 2016More than 5
Ridges, Rivers, Rainforests, and Waves in Olympic National Park, Washington16233AAug 7–12, 20162
Wandering the Goat Rocks Wilderness, Washington16146AAug 7–13, 2016Waiting List
Service and Whitewater Rafting in New River Gorge, West Virginia16263AAug 7–13, 2016Waiting List
River of No Return: Family Rafting the Main Salmon River, Idaho16217AAug 9–14, 2016More than 5
Treasures of Blackcap Basin and the White Divide, Kings Canyon National Park, California16128AAug 11–20, 2016Waiting List
Swimming the Silver Divide, John Muir Wilderness, California16127AAug 11–15, 20165
Grizzlies, Glaciers, and Climate Change: Dayhiking in Glacier National Park, Montana16234AAug 13–20, 2016Waiting List
Adventure High in Wyoming's Wind River Mountains16159AAug 13–20, 2016Waiting List
Unplug, Unwind, and Dig In: Trail Work in the Idaho Panhandle16265AAug 13–20, 20161
20s and 30s Whitney Summit, Inyo National Forest, California16129AAug 13–20, 2016Be First on Waiting List!
Lake Hopping in the Wind River Range, Wyoming16160AAug 13–20, 20163
Focus on Birds in Brazil's Pantanal and Ubatuba16870AAug 14–29, 2016More than 5
A Taste of the Sierra: Hikes, History, and Yoga, Tahoe National Forest, California16235AAug 14–19, 2016More than 5
Coast, Whales, and Pilgrims: Service in Plymouth, Massachusetts16266AAug 14–20, 2016Waiting List
Ring the Canyon, Bryce Canyon National Park, Utah16267AAug 14–20, 2016More than 5
Truckin' Through the Tablelands, Sequoia National Park, California16130AAug 14–21, 20162
National Outings Training Trip - Lodge-Based Day Hiking16998AAug 16–20, 2016Be First on Waiting List!
Quintessential Scotland: From Edinburgh to the Highlands16790AAug 16–27, 2016Be First on Waiting List!
Sailing the Haida Gwaii Islands, British Columbia16014AAug 17–24, 2016Waiting List
Lakes of the Silver Divide, John Muir Wilderness, California16297AAug 18–28, 20164
Milestone Basin, Sequoia and Kings Canyon Parks, California16131AAug 18–27, 2016More than 5
Yosemite High-Country Backpacking on the Pacific Crest Trail, California16132AAug 19–27, 2016More than 5
Backpacking the Eagle Cap Wilderness: The Eagle Creek Loop, Oregon16147AAug 20–27, 20164
Sea Kayaking at Isle Royale National Park, Michigan16196AAug 20–26, 2016Waiting List
Kings-Kaweah High Wire, Sequoia National Park, California16133AAug 20–27, 20162
Spider Meadow-Buck Creek Pass Loop, Glacier Peak Wilderness, Washington16148AAug 20–27, 20164
Trekking On- and Off-Trail in the Ansel Adams Wilderness, California16134AAug 20–27, 20162
Alpine Glory in Wyoming's Wind River Mountains16161AAug 20–27, 2016Waiting List
Pioneer Basin and Mono Recesses, John Muir Wilderness, California16135AAug 21–28, 2016More than 5
Arctic Wilderness Fishing Base Camp in the Brooks Range, Alaska16015AAug 21–29, 2016Waiting List
John Muir Wilderness Service, California16262AAug 21–27, 2016More than 5
Ramble the Ambler, Gates of the Arctic National Park, Alaska16016AAug 22–Sep 2, 20164
Gardiner Basin High Country, John Muir Wilderness, California16136AAug 27–Sep 5, 2016Be First on Waiting List!
Lodge-Based Day Hikes in the Colorado High Country16236AAug 27–Sep 3, 2016More than 5
Sawtooth Sashay, Idaho16162AAug 28–Sep 3, 2016Waiting List
Treasures of Yosemite's Northern Backcountry, California16120AAug 28–Sep 2, 2016More than 5
Mt. Humphreys Magic and Inspiration, John Muir Wilderness, California16137AAug 28–Sep 3, 2016Waiting List
Adventures in the Scottish Highlands16795AAug 29–Sep 8, 20161
On Foot in Northern Spain: Picos de Europa and the Camino de Santiago16900AAug 31–Sep 11, 20163
Hiking Slovenia: From the Julian Alps to the Adriatic Sea16800ASep 1–12, 2016More than 5
Missouri River Canoe Expedition, South Dakota and Nebraska16197ASep 2–9, 2016More than 5
Hopkins Basin and the Mono High Country, John Muir Wilderness, California16138ASep 2–6, 2016More than 5
Backpack Sampler in Olympic National Park, Washington16149ASep 3–11, 2016Waiting List
Hot and Wild: Dayhiking Yellowstone National Park, Wyoming16237ASep 3–10, 2016Waiting List
Isolated Island Wilderness: Backpacking Isle Royale National Park, Michigan16106ASep 5–11, 2016Waiting List
Hiking the Peaks and Valleys of the Dolomites, Italy16805ASep 5–16, 2016More than 5
Beginner Backpack in Pictured Rocks National Lakeshore, Michigan16105ASep 5–9, 2016Be First on Waiting List!
Prince William Sound Wilderness Cruise, Alaska16017ASep 6–13, 2016More than 5
Pampas, Andes, and Waterfalls in Argentina16875ASep 6–18, 2016More than 5
Wonderland Trail Loop, Mt. Rainier National Park, Washington16150ASep 6–16, 2016Waiting List
Mt. Hood to the Columbia River Gorge, Oregon16151ASep 10–17, 2016Waiting List
Trail Work at Mt. Rainier National Park, Washington16268ASep 10–17, 2016More than 5
Beginner's Coastal Ramble at Point Reyes National Seashore, California16139ASep 11–16, 2016Waiting List
Hut-to-Hut Traverse of the Presidential Range, New Hampshire16298ASep 11–16, 20161
Waterfalls, Alpine Lakes, and Wildflowers: Day Hikes in Colorado's San Juan Mountains16239ASep 11–17, 2016More than 5
Hidden Trails of Cinque Terre and the Italian Riviera, France and Italy16660BSep 11–22, 2016More than 5
Fantastic Four-Pass Loop, Maroon Bells-Snowmass Wilderness, Colorado16163ASep 11–17, 2016Be First on Waiting List!
Magnificent Madagascar16710ASep 11–26, 20162
Service in the Spectacular Yosemite Valley, California16270ASep 11–17, 2016Be First on Waiting List!
Kayaking and Service in the Appalachians, North Carolina16269ASep 11–17, 20163
A Taste of Tuscany and Cinque Terre, Italy16815ASep 11–22, 2016More than 5
Petroglyphs, Canyons, and Mysteries of Grand Gulch, Utah16181ASep 11–17, 2016Waiting List
Creeks and Peaks: A Multisport Adventure in Idaho's Sawtooth Mountains16238ASep 11–17, 2016Be First on Waiting List!
Working Among Wolves: Service at the Wolf Conservation Center, New York16271ASep 11–17, 2016Be First on Waiting List!
The Best of Coastal Maine: Islands, Hiking, and Lobsters16240ASep 12–18, 2016Be First on Waiting List!
Provence d'Azur, France16820ASep 12–21, 2016More than 5
Hiking the Pembrokeshire Coast Path, Wales16825ASep 16–23, 2016Waiting List
Historic North Bass Trail and Shinumo Amphitheater, Grand Canyon National Park, Arizona16165ASep 17–24, 20165
Service in the Footsteps of Daniel Boone, Red River Gorge, Kentucky16272ASep 17–24, 2016More than 5
Service at Great Sand Dunes National Park, Colorado16290ASep 17–24, 2016More than 5
Service Among Ancestral Puebloan Ruins, Utah16276ASep 18–24, 20162
Fall Day Hikes in the Crisp, Cool Colorado Rockies16248ASep 18–24, 2016More than 5
Autumn in the Stehekin Valley, North Cascades National Park, Washington16241ASep 18–24, 2016More than 5
Scenic Northwoods Backpacking on the Superior Hiking Trail, Minnesota16107ASep 18–24, 2016More than 5
50-Plus Pyramid Lake Service and Fun, Nevada16274ASep 18–24, 2016More than 5
Fall Service at Bear Run Nature Reserve and Fallingwater, Pennsylvania16273ASep 18–24, 2016Be First on Waiting List!
Hiking the Greek Islands16830ASep 22–Oct 5, 2016More than 5
Preserving U.S. History: Service at Valley Forge and Hopewell Furnace, Pennsylvania16277ASep 23–29, 2016More than 5
Secrets of Kanab Canyon, Grand Canyon National Park, Arizona16166ASep 23–30, 20163
A Taste of the South Downs, England16997ASep 23–26, 20162
Scuba Service in Monterey Bay's Kelp Forest, California16278ASep 24–Oct 1, 2016More than 5
Forbidden Heart of the Rainbow, Navajo Nation, Arizona and Utah16167ASep 25–Oct 1, 2016More than 5
Naples to Brindisi: Secrets of Southern Italy16835ASep 25–Oct 6, 2016More than 5
50-Plus Service at Clair Tappaan Lodge, Tahoe National Forest, California16275ASep 25–Oct 1, 20161
Fall Kaleidoscope in Porcupine Mountains Wilderness State Park, Michigan16182ASep 25–Oct 1, 20162
Acadia National Park Service, Maine16280ASep 25–Oct 1, 20165
Ocean Views and Hiking Along Jersey's Coast Path, British Channel Islands16840ASep 26–Oct 3, 2016Waiting List
Autumn Hikes and Hudson Valley Vistas in New York's Catskill Mountains16242AOct 1–7, 2016More than 5
Fall Foliage Hiking in Vermont's Green Mountain National Forest16243AOct 2–7, 2016More than 5
Piedras Blancas Light Station Service, Big Sur, California16281AOct 2–8, 2016More than 5
Tanner-Escalante-Grandview Route, Grand Canyon National Park, Arizona16168AOct 2–8, 20162
Hiking on the Wild Side: Potomac Highlands, West Virginia16244AOct 2–8, 2016More than 5
Tanner-Beamer- Escalante: Historic Trails and Routes, Grand Canyon National Park, Arizona16169AOct 8–15, 2016More than 5
Current River Canoeing, Ozark National Scenic Riverways, Missouri16199AOct 9–13, 2016More than 5
Carnival of Colors: Autumn in the Great Smoky Mountains, Tennessee16183AOct 9–15, 2016More than 5
Martha's Vineyard Service, Massachusetts16283AOct 9–15, 2016Waiting List
Galápagos and Machu Picchu: The Best of Ecuador and Peru16880AOct 11–23, 2016Waiting List
Jewels of the Grand Canyon, Arizona16170AOct 16–22, 2016Be First on Waiting List!
Autumn Glory in Great Smoky Mountains National Park, Tennessee16245AOct 16–21, 2016More than 5
New York City Parks Service at the Historic Bartow-Pell Conservancy, New York16284AOct 16–23, 2016More than 5
Ancestral Pueblos of Chaco Canyon and Northern New Mexico16246AOct 17–23, 2016Waiting List
Scenic China: Valleys, Vistas, and Villages16725AOct 17–29, 2016Waiting List
Grand Staircase-Escalante Llama Hike, Utah16299AOct 18–24, 2016More than 5
Land of the Thunder Dragon: Bhutan16730AOct 21–Nov 2, 2016More than 5
Top of Texas, Guadalupe Mountains National Park16291AOct 22–29, 2016More than 5
Hike, Bike, and Kayak in Vietnam16735AOct 22–Nov 5, 2016Be First on Waiting List!
Sea and Service at Point Reyes National Seashore, California16285AOct 22–29, 2016More than 5
Halfway Around Kanchenjunga, Nepal16740AOct 23–Nov 19, 2016More than 5
LGBTQ Service at Fort Ord National Monument, Monterey, California16286AOct 23–30, 2016More than 5
Treasures of Tunisia: From Roman Ruins to the Sahara16715AOct 23–Nov 3, 2016More than 5
Caribbean Island Kayaking, Florida Keys and Dry Tortugas, Florida16200AOct 23–29, 2016More than 5
Autumn Colors in the Ozarks by Foot and Paddle, Arkansas16108AOct 23–29, 2016Waiting List
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, 20165
Hidden Treasures of Florida's Gulf Coast: Kayaking Anna Maria Island16201AOct 30–Nov 5, 2016More than 5
Marvelous Muleshoe Ranch Service, Galiuro Mountains, Arizona16287AOct 30–Nov 5, 2016More than 5
Machu Picchu Eco-Lodge Trek, Peru16890ANov 1–11, 20162
Cuba by Bicycle: Culture and Conservation at a Crossroads16755ANov 3–13, 2016Waiting List
Hot Springs, Falling Water, and Service in Saline Valley, California16288ANov 6–12, 20162
Autumn Colors and Star-Filled Nights in Grand Canyon National Park, Arizona16171ANov 13–19, 2016Waiting List
Florida's Cool Springs and Wild Rivers16202ANov 13–19, 20164
Puerto Rico: From the Coast to the Mountains16247ANov 13–20, 2016More than 5
Wildlife and Timelessness: Mythical Travels in South India16750ANov 22–Dec 8, 2016More than 5
Thanksgiving with the Pilgrims and Revolutionaries, Boston, Massachusetts16184ANov 23–27, 2016More than 5
Birds and Butterflies in Tropical Panama16860ADec 10–18, 20162
Cruising the Enchanted Galápagos Islands, Ecuador16895ADec 19–31, 2016Waiting List
Natural Highlights of Costa Rica17705ADec 20, 2016–Jan 1, 2017More than 5
Southeast Asia Adventure: Northern Laos and Cambodia17500AJan 9–24, 2017More than 5
Discover the Wild Heart of Patagonia, Chile and Argentina17505AJan 13–30, 2017More than 5
Everglades Eco Adventure17400AJan 15–20, 2017More than 5
Kilimanjaro and Safari, Tanzania17510AJan 21–Feb 5, 2017Waiting List
Rebuilding a Village in Earthquake-Damaged Nepal17515AFeb 3–22, 2017More than 5
Treasures, Tigers, and the Taj Mahal, India17520AFeb 5–18, 2017More than 5
Devilish Tasmania: Cradle Mountain, Wombats, and Wild Coasts, Australia17525AFeb 7–18, 2017More than 5
Natural Cuba: Birds and Bays17530AFeb 19–Mar 2, 2017Waiting List
Highlights of Nepal: A Hiking and Cultural Tour17535AMar 4–19, 2017More than 5
Vietnam Adventure17545AMar 4–19, 2017More than 5
Hiking the Natural Beauty of Southern Costa Rica and Northern Panama17540AMar 5–17, 2017More than 5
Active Adventure on the Seventh Continent, Antarctica17555AMar 6–17, 2017Waiting List
Exploring the Hidden Kingdom, Bhutan17550AMar 6–19, 2017More than 5
Natural and Historical Highlights of Israel17560AMar 14–27, 2017More than 5
Women's Adventure in Paradise, Costa Rica17565AApr 1–9, 2017More than 5
Exploring North Holland by Bike and Barge17570AApr 5–15, 2017Waiting List
Treasures of Sicily, Italy17575AApr 18–29, 2017More than 5
Exploring North Holland by Bike and Barge17570BApr 19–29, 20175
Machu Picchu Eco-Lodge Trek, Peru17585AApr 26–May 6, 2017More than 5
Jewels of Croatia: Hiking, Biking, and Paddling17600AMay 4–17, 2017More than 5
Jewels of Croatia: Forests, Rivers, and Islands17590AMay 7–20, 2017More than 5
England's Coast-to-Coast Walk: From the Irish Sea to the North Sea17595AMay 8–21, 2017More than 5
Walking the Franciscan Trail, Umbria, Italy17610AMay 18–29, 2017More than 5
Vienna to Prague: Walking the Czech Greenways, Austria and Czech Republic17605AMay 18–31, 2017More than 5
Hiking and History in Southern England17615AMay 22–Jun 1, 2017More than 5
Mountain Vistas and Moorish Legacy in Andalucía, Southern Spain17620AMay 22–Jun 2, 2017More than 5
Hidden Trails of Cinque Terre and the Italian Riviera, France and Italy17625AJun 1–12, 2017More than 5
In Search of the Polar Bear in the Land of the Midnight Sun, Norway17630AJun 15–22, 2017More than 5
Tanzania Safari and Zanzibar Beaches17635AJun 19–29, 2017More than 5
Hiking the Alps of Bavaria and Tyrol, Germany and Austria17640AJun 20–Jul 1, 2017More than 5
Eiger and Jungfrau Up Close, Switzerland17645AJun 25–Jul 3, 2017More than 5
Hiking the Italian Western Alps17650AJun 29–Jul 9, 2017More than 5

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