See also:

• Sports: Adventure Racing  (181)
• Sports: Multi-Sports: Triathlon: Winter  (2)

Albany Running Exchange  www.albanyrunningexchange.org Trail running club based in Albany, New York. Includes summer trail run series, results, calendar, photos, and member news.

All American Trail Running Association (AATRA)  www.trailrunner.com Membership application and extensive collection of links and information on events, trails, equipment, and race results.

American Discovery Trail  www.discoverytrail.org Learn about the first running trail that crosses the entire nation.

eHow to Choose Trails for Trail Running  www.ehow.com/how_14503_choose-trails-trail.html Tips and information about trail running. Requires free membership.

Gil's Athletic Club  www.gaconline.net Trail running club based in Topsfield, Massachusetts, sponsoring several trail races (primarily ultras). In addition to race information, includes weekly runs, guide to area trails, and photos.

Irish Mountain Running Association  www.imra.ie Irish mountain running. Trails, races and links on the Island.

Mountain Running  www.mountainrunning.com Rocky Mountain trail guides with maps and descriptions. World mountain running trophy information on venues, maps, results. Guide to trail accommodations available.

Northern Arizona Trail Runner's Association  www.natra.org Promotes trail running in Northern Arizona, in the United States. Includes a listing of upcoming races, related links, history of the organization, pictures, membership details, race summaries, and message board.

Peak Trail Runner  peaktrailrunner.freehostia.com A guide to trail running in the UK Peak District national park.

Redwood Trails  www.redwoodtrails.com Information on a series of trail runs in the Bay Area of California. Race distances range from 5k to the marathon.

Run Hayward Hills Trails  members.tripod.com/sr_science/run_hayward_hills Trails of Hayward, California. Great for running and riding ATB.

Shenipsit Striders  www.shenipsitstriders.org Trail running club in Somers, Connecticut, sponsoring the Soapstone Mountain races as well as weekly training runs. Includes race information and results, photos, and links.

Team Gloucester  www.teamgloucester.com Trail running club in Gloucester, Massachusetts. Cape Ann trail information and maps as well as an extensive trail race calendar for New York and New England.

Trail Runner Magazine Online  www.trailrunnermag.com Running, health, travel, and training, race results and race event calendars.

USTrailrunner  trail.ustrailrunner.com Includes gear reviews, race calendar, online store, and discussion board.

Western Mass Athletic Club  www.runwmac.com Trail running club in western Massachusetts. In addition to club news, includes information for several trail and snowshoe races as well as the Grand Tree Trail Race Series.