Mother Lode River Center
- Whitewater rafting on the South Fork of the American River, kayaking instruction, canyoneering, biking, ropes challenge course, corporate team building, youth leadership and outdoor education programs. Private riverside camp.
- http://www.malode.com/

Outback Adventures
- Bay area kayaking, rock climbing, backpacking, and mountaineering guide service with trips, instruction, equipment rentals, and kayak sales.
- http://www.outbackadventures.com/

Hike Bike Kayak, Inc.
- Offers guided hiking, biking and kayaking in La Jolla, Mission Bay, and San Diego as well as surfing lessons. Also provides equipment rentals. Includes trip descriptions and rates.
- http://www.hikebikekayak.com/

Outdoor Adventures
- Offers guided hunting and fishing trips. Includes daily fishing report, lodging information, photos, and pricing.
- http://www.sacriverguide.com/

Cloudbreak Adventures
- Outdoor adventures for women, by women. Yoga, surfing, hiking, and rock climbing. Specializes in custom trips for individuals, mother and daughter, and groups.
- http://cloudbreakadventures.com/

River and Rock Adventures
- Offers whitewater rafting, kayaking, and rock climbing adventures in Northern California for beginners to experienced thrill seekers. Based in Coloma.
- http://www.riverandrockadventures.com

G & J Outdoor Enterprises
- Specializing in fly fishing and hunting trips for mule deer, antelope, elk, upland game birds and turkey. Includes details, rates, photos and contact information. Located in Auburn.
- http://www.gandjoutdoors.com

Tahoe Trips and Trails
- Hiking, biking, kayaking, snowshoeing, team challenges and corporate events in the Lake Tahoe, Truckee and Reno areas.
- http://www.tahoetrips.com

Peak Adventures
- Offering climbing, biking, kayaking, back-country skiing, and backpacking trips plus bike rentals and a challenge course. Based in Sacramento.
- http://www.peakadventures.org

Klamath River Outfitters
- Runs rafting and fishing tours on the Klamath, Eel, and Salmon Rivers. Located in Somes Bar.
- http://www.klamathriveroutfitters.com/

Girls Adventure Out
- Offers camping, hiking, surfing, cycling and rock climbing trips for women in the southern California area. Based in Oakland.
- http://www.girlsadventureout.com

Yosemite Guides
- Offering guide services for day hikes, backpacking trips, bird watching, and fly fishing.
- http://www.yosemiteguides.com/

Santa Barbara Adventure Company
- Kayaking on the central coast, and Channel Islands; wine country tours, hiking, mountainbiking. Custom, groups and family events.
- http://www.sbadventureco.com

Broken Wheel Ranch
- Llama pack trips through California's Klamath National Forest.
- http://www.llamapacktrips.com/

Shasta Mountain Guides
- Guided mountaineering adventures on Mt. Shasta in northern California-climb Mt. Shasta, mountaineering instruction, women's trips, rock climbing and back country ski expeditions.
- http://www.shastaguides.com

Leave No Trace Outfitters
- Backpacking in California and the Sierra Nevada with guided tours while practicing leave no trace ethics.
- http://www.leavenotrace.com/