1-World Adventures
   World travel directory specializing in adventure travel, eco tours, and sport travel.
   http://www.1worldadventures.com/

1st Class Adventures
   Directory of adventure vacation companies worldwide including backpacking, bicycling, hiking, canoeing and kayaking, skiing, and world-wide tours..
   http://www.1stclassadventures.com/

Adrenaline Pages
   Directory of clubs, schools, stores, tours, and lodging for a variety of sports and activities plus photos, events, and stories.
   http://www.adrenalinepages.com/

Adventure Travel
   Tips and destination ideas. Information on agents and tours, senior, single, and family travel, equipment outfitters, and numerous outdoor activities.
   http://activetravel.about.com/index.htm

Adventure Travel Tips
   Adventure travel and tourism directory with hundreds of listings - includes discount travel ideas and a discussion forum.
   http://www.adventuretraveltips.com/

AdventureDirect
   Directory of adventure gateways.
   http://www.adventuredirect.com/

ExtremePlanet
   Expedition information on adventure and extreme tours; food, safety, medicine and equipment.
   http://www.extreme-planet.com

GordonsGuide.com
   Details on eco tours, dude and guest ranches, whitewater rafting, houseboating, fishing lodges, multisport adventures, canoeing, camping, worldwide adventure travel and vacations.
   http://www.gordonsguide.com/

Outdoor Holidays
   Offers online search for trekking, walking, overland touring, cultural tours, white water rafting and watersports vacations.
   http://www.outdoorholidays.com

The Adventure Sports Directory
   Guide to all air, water, mountain, land and extreme sports, where to find them worldwide, together with links to equipment suppliers in all areas.
   http://www.adventuredirectory.com

Wild Dog Adventure Travel
   Directory of adventure travel companies, organized by country or by activity.
   http://www.wild-dog.com/