Winter, summer, spring and fall, Aspen Alpine Guides offers every excursion to satisfy your adventurous side. Since 1987, AAG has provided professional, quality mountain guiding adventures in the Aspen area and beyond. We are an equal opportunity service provider and employer operating under a special use permit from the USDA Forest Service, White River National Forest.

Our backcountry mountain adventures span guided year-round trips including hiking, rock climbing, mountaineering, snow-shoeing, cross country ski instruction and tours, backcountry skiing, out of bounds lift assisted skiing, mountain biking, backpacking, hut trips on the 10th Mountain Hut System, and High Altitude Training for runners and Cyclists. We also offer a series of international trekking and climbing trips, as well as American Institute for Avalanche Research and Education (AIARE) courses. With areas of operation spanning from Crested Butte to Aspen, Leadville to Vail, Telluride and Moab, Utah, we specialize in creating custom backcountry adventures for individuals and groups of all abilities and sizes.

Why choose a guide?

Not only are our guides certified in emergency wilderness medicine, they also have the knowledge and know how to tailor a trip to your individual needs and take you to places far from crowds and conventionality. As the saying goes around here, your guide is your most important accessory. Meet our guides!



Featured Trips and Courses


Castle Peak Mountaineering Course

The Castle Peak Mountaineering weekend course is a collaborative program with Colorado Mountain School. This course will teach you the skills needed to climb a peak along with how to camp in a alpine setting. This trip is a great opportunity to learn new skills or brush up on your mountaineering skills with the added bonus of summiting a classic Colorado 14er.

Advanced Ski Tour / Peak

Advanced Ski Tour/Peak Skiers must not only be physically fit but they also must have the technical skills needed in steep winter alpine terrain.

  • Pearl Basin/Peak
  • Castle Peak
  • Hayden Peak
  • Sopris Mountain
  • Geissler Peak

Leave the Boys Behind

 Photo: Catherine Aeppel

Photo: Catherine Aeppel

Calling all adventure loving women! This winter, Leave the Boys Behind, a women's specific guiding service, is offering backcountry trips and avalanche education courses. Adventure in the Colorado wilderness in company of other inspiring women on trips led by women!