Trail riding is riding outdoors on trails, bridle paths, and forest roads, but not on roads regularly used by motorised traffic. A trail ride can be of any length, including a long distance, multi-day trip. It originated with horse riding, and in North America, the equestrian form is usually called "trail riding," or, less often "hacking." In the UK and Europe, the practice is usually called horse or pony trekking.

Appalachian Mountain Club (AMC) is the oldest outdoor group in the United States. Created in 1876 to explore and preserve the White Mountains in New Hampshire, it has expanded throughout the northeastern U.S., with 12 chapters stretching from Maine to Washington, D.C. The AMC's 90,000 members, its advocates, and supporters mix outdoor recreation, particularly hiking and backpacking, with environmental activism. Additional activities include cross-country skiing, whitewater and flatwater canoeing and kayaking, sea kayaking, sailing, rock climbing and bicycle riding. The Club has about 2,700 volunteers, who lead roughly 7,000 trips and activities per year. The organization publishes a number of books, guides, and trail maps.

Camping is a form of outdoor recreation or outdoor education involving overnight stays with a basic temporary shelter such as a tent. Camping can also include a recreational vehicle, sheltered cabins, a permanent tent, a shelter such as a bivy or tarp, or no shelter at all. Typically, participants leave developed areas to spend time outdoors, in pursuit of activities providing them enjoyment or in a form of educational experience. Spending the night away from home distinguishes camping from day-tripping, picnicking, and other outdoor activities.

Recreational Equipment, Inc., doing business as REI, is an American retail and outdoor recreation services corporation. It was formerly governed, and continues to brand itself, as a consumers' co-operative. REI sells camping gear, hiking, climbing, cycling, water, running, fitness, snow, travel equipment, and men, women and kids clothing. It also offers services such as outdoor-oriented vacations and courses. Unlike other outdoor sports stores, it does not sell hunting or fishing equipment.

Backpacking is the outdoor recreation of carrying gear on one's back while hiking for more than a day. It is often an extended journey and may involve camping outdoors. In North America, tenting is common, where simple shelters and mountain huts, widely found in Europe, are rare. In New Zealand, hiking is called tramping, and tents are used alongside a nationwide network of huts. Hill walking is equivalent in Britain, though backpackers make use of a variety of accommodation, in addition to camping. Backpackers use simple huts in South Africa. Trekking and bushwalking are other words used to describe such multi-day trips.

Trips For Kids is a non-profit community service organization that provides beginner and intermediate-level mountain bike riding, environmental education, bicycle mechanics training and earn-a-bike programs for youth in the United States and Canada. Legally based in Marin County, California, over 230,000 children have been served by 75 Trips for Kids chapters in the United States and Canada as of December 2017.

Assemblies of God youth organizations include two youth organizations operating under the auspices of the Assemblies of God, the Royal Rangers and the Mpact Girls Clubs.

The International Mountain Bicycling Association (IMBA) is a non-profit educational association that aims to create and preserve trails for mountain bikers worldwide. The IMBA promotes mountain biking, trail building, and trail maintenance. The IMBA has developed a set of principles known as the "Rules of the Trail", which promote responsibility on shared-use and single track trails.

Complete streets is a transportation policy and design approach that requires streets to be planned, designed, operated and maintained to enable safe, convenient and comfortable travel and access for users of all ages and abilities regardless of their mode of transportation. Complete Streets allow for safe travel by those walking, cycling, driving automobiles, riding public transportation, or delivering goods.

Outdoor recreation or outdoor activity refers to recreation done outside, most commonly in natural settings. The activities that encompass outdoor recreation vary depending on the physical environment they are being carried out in. These activities can include fishing, hunting, backpacking, walking and horseback riding — and can be completed individually or collectively. Outdoor recreation is a broad concept that encompasses a varying range of activities and landscapes.

Community Action Services and Food Bank (CASFB), located in Provo, Utah, is a non-profit organization that serves the low-income population of Utah, Summit, and Wasatch counties and focuses on the operation of programs that help alleviate poverty. It was founded in 1967 following the signing of the Economic Opportunity Act in 1964 by President Lyndon B. Johnson and is one of more than 1,000 independent Community Action Agencies across the country. It is sponsored by United Way of Utah County.

Woodswomen, Inc. was a nonprofit organization focusing on education and adventure travel operated by women, for women out of Minneapolis, Minnesota, from 1977 to 1999. Woodswomen was one of the first adventure travel companies serving exclusively women and served more than 8,000 women and 1,200 children in its tenure. It has been referred to as the 'grandmother' of women's outdoor adventure groups.

After School Matters is a non-profit organization that provides Chicago high school teens with after-school and summer opportunities. It offers project-based after-school and summer programs in the arts, communications and leadership, sports and STEM.

Ambreen Tariq is an American activist and children's author whose work focuses on outdoor recreation, accessibility, and social justice. In 2016, Tariq founded @BrownPeopleCamping, an Instagram account that highlights the recreational experiences of people of color and immigrants in the United States. Her writing has been featured in Outside magazine, and in 2020 she published her debut children's book, Fatima's Great Outdoors. She has been profiled by The New York Times, NPR, CNN Health, Elite Daily, and more.