179 trips match your search for "United States"
NameTrip #DatesSpaces
Hoodoos by Day, Points of Light by Night, Bryce Canyon National Park, Utah13031AMay 22–28, 2013Waiting List
Dark Canyon Wilderness Adventure, Utah13044AMay 26–Jun 1, 2013Waiting List
New York City Park Service13268AMay 26–Jun 2, 20134
Glaciers, Grizzlies and Ghost Towns, Wrangell-St. Elias National Park, Alaska13010AJun 1–11, 2013Waiting List
Cycling Colonial Williamsburg and the Historic Triangle, Virginia13190AJun 1–7, 20131
Wildflower Wanderlust: Spring in Washington's North Cascades13230AJun 2–8, 20135
Red Rock Canyons of Escalante, Utah13043AJun 2–8, 2013Be First on Waiting List!
Backpacking Great Smoky Mountains National Park, North Carolina and Tennessee13100AJun 2–8, 2013Waiting List
Rafting the Wild and Free Yampa, Dinosaur National Monument, Colorado and Utah13260AJun 5–9, 2013Waiting List
Wildflowers, Birds, and Botanical Illustration in the Brooks Range, Alaska13012AJun 5–11, 2013Be First on Waiting List!
Monhegan Island: Jewel of the Sea, Maine13269AJun 8–14, 2013Be First on Waiting List!
Lake Michigan Bike And Hike, Sleeping Bear Dunes National Lakeshore, Michigan13192AJun 8–14, 2013Waiting List
Star Party on the North Rim, Grand Canyon National Park, Arizona13272AJun 8–15, 2013Waiting List
Chaco Canyon Service, New Mexico13270AJun 8–15, 20131
Exploring the Lost Coast, Sinkyone Wilderness, California13120AJun 9–16, 20134
Spectacular Steens Mountain Service, Oregon13273AJun 9–15, 20134
Arctic Refuge on a Budget, Arctic National Wildlife Refuge, Alaska13013AJun 11–22, 2013Be First on Waiting List!
Musk Ox Magic at Cape Krusenstern, Alaska13014AJun 13–19, 2013Waiting List
Cheating The Devil: Service at Devil's Postpile National Monument, California13274AJun 16–23, 2013Waiting List
Kenai Peninsula Trail Service, Chugach National Forest, Alaska13015AJun 16–22, 20131
Coastal Plain to Arctic Peaks Wildlife Safari, Arctic National Wildlife Refuge, Alaska13028AJun 17–28, 2013Waiting List
Mule Packer Paradise: Ranch Maintenance in Shawnee, Colorado13275AJun 22–29, 2013More than 5
Packrafting South Central Alaska, Chugach National Forest13016AJun 23–28, 20132
Resurrection Bay Trail Restoration, Alaska13017AJun 23–29, 20131
Backcountry Preservation in the Bob Marshall Wilderness, Montana13276AJul 1–7, 2013Be First on Waiting List!
Waterfalls of Hetch Hetchy, Yosemite National Park, California13121AJul 1–6, 2013Waiting List
Kayaking Tsunami Cleanup in Prince William Sound, Alaska13019AJul 2–8, 2013Waiting List
Thousand Island Lake and Gems of the Ritter Range, Ansel Adams Wilderness, California13122AJul 3–7, 2013Waiting List
Laid-Back Backpack in Utah's High Uinta Wilderness13155AJul 7–13, 2013Waiting List
Sea and Mountains Along the Rockbound Coast of Maine13232AJul 7–14, 2013Be First on Waiting List!
Cape Cod Family Adventure, Massachusetts13212AJul 7–13, 2013More than 5
Yoga and Hiking in the Redwoods, Marin County, California13231AJul 7–13, 2013More than 5
A Vegan Service Project in Spectacular Yosemite Valley, California13277AJul 7–14, 2013Waiting List
Wilderness Cruise on Alaska's Inside Passage13023BJul 13–22, 2013Waiting List
Golden Trout Gambol, California13123AJul 13–20, 2013Waiting List
Yosemite High Country Loop, Yosemite National Park, California13124AJul 14–19, 2013Waiting List
Just for Grandparents and Grandkids, Tahoe National Forest, California13213AJul 14–19, 2013Be First on Waiting List!
Just for Grandparents and Grandkids, Tahoe National Forest, California13213BJul 14–19, 2013Waiting List
Fantastic Four Pass Loop, Maroon Bells-Snowmass Wilderness, Colorado13156AJul 14–20, 2013Be First on Waiting List!
Exploring the Adirondacks, New York13181AJul 14–19, 20133
Introduction to Backpacking in the High Sierra, Tahoe National Forest, California13125AJul 14–20, 2013More than 5
Hiking the High Sierra and the Pacific Crest Trail, Mokulemne Wilderness, California13234AJul 14–20, 20133
Rockin' the Marble Mountains: A Teen Service Trip in Klamath National Forest, California13214AJul 17–25, 20133
Family Rafting in Dinosaur National Monument, Utah13215AJul 18–21, 2013Be First on Waiting List!
Across the High Emigrant Wilderness, California13126AJul 18–25, 2013Waiting List
Lake Superior Service, Isle Royale National Park, Michigan13278AJul 19–27, 2013Waiting List
Beginners and Beyond in the Wind River Range, Wyoming13157AJul 20–27, 20131
Family Ramble, Rocky Mountain National Park, Colorado13216AJul 20–27, 2013Be First on Waiting List!
Monarch Divide Steeplechase, Kings Canyon National Park, California13127AJul 20–27, 2013Be First on Waiting List!
Alpine Lakes Odyssey, Yosemite National Park, California13128AJul 20–28, 2013Waiting List
All in the Family: A Multigenerational Family Adventure in Tahoe National Forest, California13217AJul 21–27, 2013Waiting List
Trekking to Triple Divide Peak, Sequoia and Kings Canyon National Parks, California13129AJul 21–28, 2013More than 5
Trail-Building in Denali National Park, Alaska13025AJul 21–27, 20131
Sweet Day Hikes in the Bitterroot Mountains, Montana13236AJul 21–27, 2013Waiting List
Treasures of the Goddard Divide, Kings Canyon National Park, California13130AJul 25–Aug 3, 2013Waiting List
Yosemite Natural History Base Camp, California13182AJul 26–Aug 2, 2013Waiting List
Grizzlies, Glaciers, and Climate Change: Dayhiking in Glacier National Park, Montana13237AJul 27–Aug 3, 2013Waiting List
Wandering the Wild Wind River Range, Wyoming13158AJul 27–Aug 2, 2013Be First on Waiting List!
Inspiration in Pioneer Basin, John Muir Wilderness, California13131AJul 27–Aug 3, 2013More than 5
20s and 30s Evolution Basin Backpack, Sequioa National Park, California13149AJul 27–Aug 3, 2013Waiting List
Beginner Backpack in Wyoming's Gros Ventre Wilderness13160AJul 28–Aug 3, 2013Be First on Waiting List!
Service in Central Vermont's Green Mountain National Forest13279AJul 28–Aug 2, 2013More than 5
Lodge Adventure in America's Alps, North Cascades, Washington13238AJul 28–Aug 3, 2013Be First on Waiting List!
Family Service and Fun Exploring Marin County, California13220AJul 28–Aug 3, 2013More than 5
Cape Cod Summer Sampler, Massachussetts13249AJul 28–Aug 4, 20132
Music in the Mountains: Stanislaus and Toiyabe National Forests, California13239AJul 28–Aug 3, 2013More than 5
Backpacking Rocky Mountain National Park, Colorado13159AJul 28–Aug 3, 2013Be First on Waiting List!
Family Canoeing and Whitewater Rafting in Adirondack Park, New York13219AJul 28–Aug 1, 2013More than 5
Tuolumne Meadows Service, Yosemite National Park, California13280AJul 28–Aug 4, 2013Waiting List
Summer in the Serene Stehekin Valley, North Cascades National Park, Washington13240AJul 28–Aug 3, 2013Waiting List
Wild and Scenic Rogue River Family Adventure, Oregon13218AJul 28–31, 20133
Lakes of the Silver Divide, John Muir Wilderness, California13315AJul 29–Aug 9, 2013Waiting List
Families, Wildflowers, and Llamas in the Grand Tetons, Wyoming13221AJul 29–Aug 2, 20133
Leisurely Ladies Backpacking in Yosemite, California13133AJul 29–Aug 4, 2013Waiting List
Multigenerational Teen Service and Exploration in Lassen Volcanic National Park, California13222AAug 3–10, 2013Waiting List
Northern Yosemite's Remote Lakes, Canyons and Passes, California13134AAug 3–11, 20135
Grand Views and Wildlife: Service in the Gros Ventre Wilderness, Wyoming13282AAug 3–10, 2013Waiting List
Lake Hopping in the Ansel Adams Wilderness, California13136AAug 3–10, 20131
Backpacking in Paradise: High Sierra Camps Part One, Yosemite National Park, California13135AAug 3–10, 2013Be First on Waiting List!
Mt. Hood to the Columbia River Gorge on the Pacific Crest Trail, Oregon13110AAug 3–10, 2013Waiting List
Red Slate Mountain and the Silver Divide, John Muir Wilderness, California13137AAug 3–11, 2013More than 5
Wilderness Cruise on Alaska's Inside Passage13023AAug 4–13, 2013Waiting List
Service in the Selway-Bitterroot Wilderness, Montana and Idaho13283AAug 4–10, 20134
Wandering Wyoming's Bighorn Wonders, Cloud Peak Wilderness13162AAug 4–10, 2013More than 5
Family Multi-Sport Unplugged in Ohiopyle State Park, Pennsylvania13223AAug 5–11, 2013More than 5
Family Rafting in Dinosaur National Monument, Colorado and Utah13224AAug 8–11, 20135
Women's Adventure High in Wyoming's Wind River Range13163AAug 9–17, 2013Waiting List
Classic Northcountry Sampler: Boundary Waters Canoeing and Apostle Islands Kayaking, Minnesota and Wisconsin13195AAug 9–17, 2013More than 5
Grizzlies, Glaciers, and Climate Change: Dayhiking in Glacier National Park, Montana13242AAug 10–17, 2013Be First on Waiting List!
Magnificent Maroon Bells, Colorado13164AAug 10–17, 20131
Wonders of the Kings-Kern Divide: Center and Milestone Basins, California13138AAug 10–19, 2013Be First on Waiting List!
Volcanoes, Glaciers, and Wildflowers: Sunrise Area Trail Restoration, Mt. Rainier, Washington13284AAug 10–17, 2013Waiting List
Return to Bryce Canyon: Family Service in Utah13226AAug 11–17, 2013Waiting List
Sawtooth Sashay, Idaho13165AAug 11–17, 20135
Sierra Paradise for Photographers, Ansel Adams Wilderness, California13183AAug 11–17, 2013Waiting List
Mountain Medley, Tahoe National Forest, California13244AAug 11–17, 2013More than 5
Beginners Backpack, Ansel Adams Wilderness, California13139AAug 11–17, 20133
Ridges, Rivers, Rainforest, and Waves in Olympic National Park, Washington13243AAug 11–16, 2013Be First on Waiting List!
Work and Play at Clair Tappaan Lodge, Tahoe National Forest, California13286AAug 11–17, 2013More than 5
Service in the Wild Selkirks, Idaho13285AAug 11–17, 2013More than 5
Gorge and Grave: Adult and Teen Service in New River Gorge, West Virginia13225AAug 11–17, 2013More than 5
Ridges, Rivers, Rainforest, and Waves in Olympic National Park, Washington13243BAug 11–16, 20133
Superior Dayhiking on the Superior Hiking Trail, Minnesota13245AAug 11–17, 2013More than 5
Backpacking in Paradise: High Sierra Camps Part Two, Yosemite National Park, California13140AAug 11–19, 2013Be First on Waiting List!
Gem of the Great Western Divide, Sequoia National Park, California13141AAug 12–17, 20132
Stevens North to Stehekin: 100 Miles on the Pacific Crest Trail, Washington13111AAug 14–24, 2013Waiting List
NO Training Trip - Backpacking in Rocky Mountain National Park13999AAug 14–18, 20131
Beginner Backpacking in the Emigrant Wilderness, California13142AAug 17–24, 2013More than 5
Beargrass in the Bob Marshall Wilderness, Montana13166AAug 17–25, 20134
Miter Basin and More, John Muir Wilderness and Sequoia National Park, California13144AAug 17–26, 20131
Painting Along the Sierra Trails, Tahoe National Forest, California13246AAug 18–24, 2013More than 5
Kern Headwaters of the High Sierra, John Muir Wilderness, California13316AAug 18–30, 20131
Lakes and Passes of the Western Ansel Adams Wilderness, California13145AAug 18–26, 20135
Service in the Heart of the Wind River Range, Popo Agie Wilderness, Wyoming13287AAug 18–24, 2013More than 5
Lodge-Based Day Hikes in the Colorado High Country13247AAug 24–31, 20135
Paddling in Thoreau's Path, West Penobscot Wilderness, Maine13196AAug 24–30, 2013Waiting List
Trail of the Trilobites, Bob Marshall Wilderness Complex, Montana13167AAug 24–Sep 1, 20132
Palisades High Country, Kings Canyon National Park, California13147AAug 24–Sep 2, 2013Waiting List
Pinnacle Achievement: An Anniversary Circuit in the John Muir Wilderness, California13146AAug 25–Sep 1, 2013Be First on Waiting List!
Summer Day Hiking in Idaho's Sawtooth Range13248AAug 25–31, 2013Be First on Waiting List!
On the John Muir Trail, Kings Canyon National Park, California13148AAug 28–Sep 7, 2013More than 5
Backpacking Olympic National Park: Enchanted Valley and LaCrosse Basin, Washington13112AAug 31–Sep 8, 2013Waiting List
Isolated Island Wilderness: Backpacking Isle Royale National Park, Michigan13101ASep 2–8, 20132
Service on an Island Paradise, Santa Catalina Island, California13288ASep 7–14, 20135
Colorado Rockies Van-Venture, Rocky Mountain National Park13250ASep 7–14, 2013More than 5
Mount Rainier Northern Loop, Washington13113ASep 7–14, 20135
Re-Greening the Grand Canyon, Arizona13291ASep 8–14, 2013More than 5
Kayaking and Service in the Appalachian Mountains, North Carolina13290ASep 8–14, 2013Waiting List
Archaeological Restoration in Mesa Verde National Park, Colorado13289ASep 8–14, 2013Waiting List
Naturalist Kayaking in Florida13197ASep 8–14, 20135
Biking and Hiking Acadia National Park, Maine13191ASep 8–14, 20134
The Best of the North Cascades, Washington13114ASep 9–20, 2013Be First on Waiting List!
Stevens North to Stehekin: 100 Miles on the Pacific Crest Trail, Washington13111BSep 12–22, 2013More than 5
Hut-To-Hut in the White Mountains, New Hampshire13317ASep 14–18, 2013Waiting List
Delving into the Nankoweap, Grand Canyon National Park, Arizona13170ASep 15–21, 2013More than 5
Forbidden Heart of the Rainbow, Navajo Indian Reservation, Arizona and Utah13171ASep 15–21, 2013Waiting List
Autumn in the Stehekin Valley, North Cascades National Park, Washington13252ASep 15–21, 2013Be First on Waiting List!
Beginners Coastal Ramble through Point Reyes National Seashore, California13150ASep 15–20, 20135
Hotsprings and Waterfalls Llama Hike, Yellowstone National Park, Wyoming13318ASep 15–20, 2013Waiting List
Service at Antietam National Battlefield, Maryland13082BSep 15–21, 2013More than 5
50-Plus Ridgetop Rambles, Tahoe National Forest, California13251ASep 15–21, 2013More than 5
Historic North Bass Trail and Shinumo Amphitheater, Grand Canyon National Park, Arizona13172ASep 21–28, 2013Waiting List
Wilderness Trail Building in the Red River Gorge, Kentucky13292ASep 21–28, 20135
Fall Splendor in the Colorado Rockies, Rocky Mountain National Park13254ASep 22–28, 2013Waiting List
Fall Foliage Hiking in Vermont's Green Mountain National Forest13253ASep 22–27, 2013Waiting List
Cape May Service, New Jersey13293ASep 22–28, 2013More than 5
Deer Creek-Thunder River Loop, Grand Canyon National Park, Arizona13173ASep 22–28, 2013More than 5
Service Among Ancestral Puebloan Ruins, Utah13294ASep 22–28, 2013Be First on Waiting List!
Grasslands Research in the Valles Caldera, New Mexico13081BSep 22–28, 2013More than 5
Gitche Gumee Gambol: Backpacking in Pictured Rocks National Lakeshore, Michigan13103ASep 23–27, 20132
South Bass, Royal Arch, and Elves Chasm Epic, Grand Canyon National Park, Arizona13175ASep 28–Oct 5, 2013Be First on Waiting List!
Habitat and History at Fort Ord, Monterey, California13297ASep 29–Oct 6, 2013More than 5
Aspens in the Stanislaus, California13295ASep 29–Oct 5, 2013More than 5
Building the Pine Mountain Trail, Kentucky and Virginia13296ASep 29–Oct 5, 2013More than 5
Kayaking the Enchanted Okefenokee, Georgia13198ASep 29–Oct 5, 2013More than 5
History and Service at Valley Forge National Historic Park, Pennsylvania13298AOct 5–12, 2013More than 5
Lilting Lighthouse Lore and Labor, Big Sur, California13299AOct 5–12, 2013Waiting List
Acadia National Park Service, Maine13300AOct 6–12, 20135
New Jersey Seashore Service13301AOct 6–12, 2013Be First on Waiting List!
Martha's Vineyard Service, Massachusetts13302AOct 6–12, 2013Waiting List
Waterfalls, Waterways, and Wonders of the Shenandoah, Virginia13184AOct 6–12, 2013More than 5
Current River Canoeing, Ozark National Scenic Riverways, Missouri13199AOct 13–17, 2013More than 5
Carnival of Colors: Autumn in the Great Smoky Mountains, Tennessee13185AOct 13–19, 20134
Ancestral Puebloan Cultures in the Southern Rockies, Colorado and New Mexico13255AOct 13–20, 20132
Historic Bartow-Pell Conservancy Service Trip, New York City13303AOct 13–20, 2013More than 5
Top of Texas, Guadalupe Mountains National Park13304AOct 19–26, 2013Waiting List
Hot Springs, Falling Water, and Service in Saline Valley, California13306AOct 20–26, 20134
Audubon Research Ranch Service, Appelton-Whittell Research Ranch, Arizona13305AOct 20–26, 2013More than 5
Kayaking Coastal Carolina, South Carolina13200AOct 20–26, 2013Be First on Waiting List!
Sea and Service at Point Reyes National Seashore, California13308AOct 26–Nov 2, 2013More than 5
Women's Service at Pine Island Conservation Area, Merritt Island, Florida13310AOct 27–Nov 2, 2013Waiting List
Jewels of the Grand Canyon, Arizona13177AOct 27–Nov 2, 2013Waiting List
Caribbean Island Kayaking, Florida Keys and Dry Tortugas, Florida13201AOct 27–Nov 2, 2013Waiting List
Marvelous Muleshoe Ranch Service, Gailuro Mountains, Arizona13309ANov 3–9, 20134
Islands in the Sun: Kayaking Cayo Costa State Park, Florida13202ANov 17–23, 2013More than 5
Flamingo Base Camp in Florida's Everglades National Park13203ADec 15–20, 2013More than 5
New Years Canoeing on the Current River, Ozark National Scenic Riverways, Missouri14400ADec 29, 2013–Jan 1, 2014More than 5
New Year on the Big Island, Hawaii14056ADec 30, 2013–Jan 4, 2014More than 5
Sun, Service and Whales, Maui14401AJan 19–26, 2014More than 5

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