See also: Ultramarathon • Events
Albany Running Exchange
albanyrunningexchange.org
Trail running club based in Albany, New York. Includes summer trail run series, results, calendar, photos, and member news.
Run Hayward Hills Trails
members.tripod.com
Trails of Hayward, California. Great for running and riding ATB.
Gil's Athletic Club
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.
Perry Scanlon's Home Page
geocities.com
Contains photos and links to trail and workout information near Palm Springs, California, as well as specific information for the Skyline Trail.
American Discovery Trail
discoverytrail.org
Learn about the first running trail that crosses the entire nation.
Peak Trail Runner
geocities.com
A guide to trail running in the UK Peak District national park.
Shenipsit Striders
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.
Western Mass Athletic Club
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.
New England Trail Runner
newenglandtrailrunner.com
Extensive listing of New England area trail racing and running information on the web. Includes race results posting and trail running club information.
eHow to Choose Trails for Trail Running
ehow.com
Tips and information about trail running. Requires free membership.
Team Gloucester
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.
USTrailrunner
ustrailrunner.com
Includes gear reviews, race calendar, online store, and discussion board.
Redwood Trails
redwoodtrails.com
Information on a series of trail runs in the Bay Area of California. Race distances range from 5k to the marathon.
Irish Mountain Running Association
imra.ie
Irish mountain running. Trails, races and links on the Island.
BC Trail Running
bctrailrunning.com
Offers information on trail running in British Columbia, Canada. Includes articles, photos, and links to several trail series.
Trail Runner Magazine Online
trailrunnermag.com
Running, health, travel, and training, race results and race event calendars.
Mountainrunning.com
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
natra.org
Promotes trail running in Northern Arizona, in the United States. Contains a listing of upcoming races, related links, history of the organization, pictures, membership details, race summaries, and message board.
All American Trail Running Association (AATRA)
trailrunner.com
Membership application and extensive collection of links and information on events, trails, equipment, and race results.