Communities

Seacoast Meetup group for meeting people through hikes, walks and other outdoor activities.

Portsmouth, NH · not in an area yet

Half Moon Bay land trust with guided coastal walks and volunteer events.

Half Moon Bay, CA

A women's running club in the Denver metro area hosting group runs, track workouts, and social events for women of all paces.

Denver

Nonprofit protecting Colorado's 14,000-foot peaks through trail building and hiker education, with volunteer trail days June to September.

Lakewood, CO

Front Range trail advocacy group (an IMBA chapter): trail building and maintenance days, community rides and a women's program.

Denver

Colorado's statewide hiking and mountaineering club, based at CMC Basecamp in Golden: trips, schools and free Explore Nights for newcomers.

Golden

Volunteer-led hikes, climbs and mountaineering trips around Boulder, the Indian Peaks and Rocky Mountain National Park, with skills courses.

Boulder

The Colorado Springs group of the Colorado Mountain Club, formed in 1919. Leads hikes, climbs and courses around Pikes Peak.

Colorado Springs

Mushroom society with monthly identification talks at Denver Botanic Gardens and member forays, March to October.

Denver

Promotes the appreciation and conservation of Colorado's native flora through guided field trips, workshops, and botany hikes across the state and metro Denver.

Denver

Recreational cycling club in Colorado Springs running weekly group rides at several paces on paths and roads, posted on its Meetup.

Colorado Springs

Volunteers who build and maintain the 567-mile Colorado Trail from Denver to Durango, with trail crews and adopt-a-section.

Denver

Denver nonprofit paddling club with kayak classes, roll clinics, safety courses, a kids team, river weekends, a spring film festival and river advocacy.

Denver

Columbia road cycling club with Saturday A, B and C group rides.

Columbia, SC

Columbia, SC running club with group runs and races.

Columbia, SC

North Portland watershed group with guided paddles, nature walks and restoration events.

Portland, OR

Concord land trust with guided walks, nature programs and volunteer days.

Concord MA

Audubon chapter with beginner bird walks, a beginner birding class and field trips in the Conejo Valley.

Thousand Oaks, CA

Columbia river group protecting the Broad, Saluda and Congaree, with paddles and cleanups.

Columbia, SC

Park partner nonprofit running guided hikes, photo walks, volunteer drop-in days and programs in Cuyahoga Valley.

Peninsula, OH

St. George conservation group with guided hikes in Red Cliffs NCA, workshops and volunteer days.

St. George, UT

Land trust working across Western North Carolina, with volunteer trail and stewardship days.

Hendersonville

Nonprofit that looks after the Continental Divide National Scenic Trail with volunteers and partners; based in Golden.

Golden

Club that builds and maintains singletrack in Gorham and promotes cycling across Coös County.

Gorham, NH

Coosa River protection group with paddle trips, clean-ups and water monitoring along the Coosa.

Gadsden, AL

Keweenaw birding club that leads bird walks and helps run Houghton's Spring on the Wing festival.

Copper Harbor, MI

Trail nonprofit in Copper Harbor, Michigan.

Copper Harbor, Michigan

Volunteer group that builds and maintains natural-surface trails for riders, hikers and runners around Cincinnati and Northern Kentucky.

Cincinnati, OH · not in an area yet

Mountain bike club for the Santa Monica Mountains and LA area running group rides, skills clinics, kids rides and trail work days.

Los Angeles, CA

Student-run outing club running hiking, backpacking and climbing trips with gear to borrow.

Ithaca, NY · not in an area yet

Stewardship nonprofit for Big and Little Cottonwood Canyons, with trail crews, volunteer days and naturalist-led snowshoe tours at Alta.

Salt Lake City

Albuquerque nonprofit running outdoor expeditions and camping programs for young people.

Albuquerque, NM · not in an area yet

Nonprofit that protects access to Vermont climbing cliffs, maintains trails and hosts the Vermont Climbing Festival.

Richmond, VT

Women's mountain bike group in the Charlotte area.

Charlotte

Cycling club in Fayetteville for road and mountain riders.

Fayetteville

Volunteer crew building and maintaining community trails in Crozet.

Crozet, VA

Denver community connecting and supporting climbers of color, with monthly meetups at local gyms.

Denver

Nashville water nonprofit with tree plantings, clean-ups and paddle events in the Cumberland basin.

Nashville, TN

Nonprofit building the Cumberland Trail across the Cumberland Plateau since 1997, with professional and volunteer trail crews.

Chattanooga

Denver-area Trout Unlimited chapter with meetings, river conservation projects and fly fishing outings.

Denver

Volunteer association leading interpretive hikes and programs in Cuyamaca Rancho State Park.

Julian, CA

Duluth mountain bike club that builds and maintains singletrack and hosts rides and trail work days.

Duluth, MN

Danville river group offering free monthly First Saturday hikes and public paddles.

Danville, VA

LGBTQ+ and allies running and walking club with weekly group runs in DC.

Washington, DC

DC running club with weekly group runs, training programs and club races.

Washington, DC

Weekly climbing night at The Spot Denver for women, trans, non-binary, intersex and gender-nonconforming climbers. Free for members, a day pass for others.

Denver

Volunteer group that builds and maintains Decorah's mountain bike and hiking trails and holds trail work days and rides.

Decorah, IA

Orienteering club holding beginner-friendly map-and-compass events in area parks.

Philadelphia, PA

Birding club founded 1890 that runs field trips around the Philadelphia region.

Philadelphia, PA

Amateur astronomy club running public nights at the University of Denver's historic Chamberlin Observatory since 1949.

Denver