| Achter, Jeff | | Includes a description for Whitney-Gilman, an early route up Cannon Mountain in New Hampshire. |
| Adams, Jeremy | | Trip reports and photos from the Gunks, New York; Rumney, New Hampshire; and T-Wall, Tennessee. |
| Adventure Group | | Documents this goal of reaching the highest point in all 50 states. Includes trip reports. |
| Ager, Joel | | Photos and trip reports from New River Gorge, West Virginia; Yosemite, California; Joshua Tree, California; Smith Rock, Oregon; and various California crags. |
| Alguard, Dawn a.k.a. TradGirl | | Trip reports and photos from the Gunks, New York; Joshua Tree, California; Yosemite, California; Utah; Rumney, New Hamphshire; Red Rocks, Nevada; the Daks, New York; and Potrero Chico, Mexico. Information on climbing at Cayman Brac, Cayman Islands. |
| Allison, Bill | | Trip reports and photos from alpine climbing in the Pacific Northwest. |
| Alt, Aya Kristen | | Photos from the Gunks, New York; Castle Rock State Park in California; and bouldering near Middletown, Connecticut. |
| Altman, Yoav | | Photos from Canon Tajo, California; and Joshua Tree, California; |
| Andersen, Dave | | The Splat Calculator which answers the question "How fast will you be going when you hit the deck?" Pictures and stories from Yosemite, Castleton Towers, and Red Rocks. Solo aiding at Rumney, New Hampshire and ice climbing at Newfound Lake, New Hampshire. |
| Anderson, Rik | | Links to information on climbing in Washington. Photos and an account of an expedition to Aconcagua. |
| Apkarian.net | | Guide to climbing at Ten Sleep Canyon, Wyoming plus photos from various Wyoming climbing trips. |
| Arnette, Alan | | Trip reports and photos from Denali, Alaska; Ama Dablam, Nepal; Cho Oyu, Tibet; Mount Blanc, France; Long's Peak, Colorado; and the Grand Teton, Wyoming. |
| Austin, Bob | | Photos and trip reports from Joshua Tree, California; Red Rocks, Nevada; Zion National Park, Utah; Yosemite, California; and the Eastern Sierra. |
| Baba, Karl | | Trip reports and photos from free and aid climbing in Yosemite. A topo for Galactic Hitchhiker. |
| Baker, John R. | | Article on the principles of face climbing. Photos. Information on climbing at Windy Point, Mount Lemmon, Arizona, including directions and route listings. Information on climbing at the Aspen Loop Crag, including route listings and photos. List of new routes at the Fortress. |
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