| Abbreviation | Definition |
|---|---|
| ABC | Adventure, Balance, and Challenge |
| AHS | American HIking Society |
| AICPCM | American Institute of Certified Planners Continuing Maintenance |
| AMC | Appalachian Mountain Club |
| AMC | Arizona Mountaineering Club |
| ARAC | Advanced Recreational Avalanche Course |
| AT | American Trails |
| AVA | American Volkssporting Association |
| BBHS | Billings Best Hiking Sticks |
| BEER | Beat Every Endurance Runner |
| BRHC | Blue Ridge Hiking Club |
| BUG | Backpacker's Ultimate Guide |
| CAC | Cyclo Accueil Cyclo |
| CCP | Crystalline Caverns Pack |
| CCTC | Chester County Trail Club |
| CD | Camping Device |
| CHAOS | Camping Hiking And Outdoor Survival |
| CMS | Chronic Mountain Sickness |
| CNS | Coalition Nationale sur les Sentiers |
| CRHT | California Riding and Hiking Trail |