American Running Association
A nonprofit organization dedicated to educating and supporting runners. Provides useful suggestions and resources.
http://www.americanrunning.org/

Dead Runners Society
A discussion group about running. The group is informal and social and they all try to encourage each other in their running programs. They talk about everything related to running, from meditation to marathons.
http://storm.cadcam.iupui.edu/drs/drs.html

Iskip.com
Club of people who like to skip, and which organizes skips to benefit charities. Profiles the movement founder and key figures, local skipping activities, and benefits of skipping.
http://www.iskip.com/

Momentum Sports
Includes planning, workout, nutrition and recommended venues for training and racing.
http://www.momentumsports.co.uk/

Run Walk Jog.com
Running and event calendars and results. Free event listing, free results listing and free online registration. 4 year training log.
http://www.runwalkjog.com/

Run-Down
Extensive running links, free monthly contests with numerous prizes, training information, injury prevention tips, results and events, training partner locator, and discussion forum.
http://run-down.com/

RunMonkey
A running directory indexed by personal, miscellaneous, gear, and club sites.
http://www.epembs.com/rm/

Runners Web
Dedicated to running in the UK, including club directory, training diaries, advice, pace calculators, book reviews and message boards.
http://www.runnersweb.co.uk/

Running Online
A guide to running related web sites, high school and college programs, training articles, a college recruiting database, and runners log.
http://www.runningonline.com/

Running Page
Product reviews, running information, discussions.
http://www.runningpage.com/

Running Past
Dedicated to the history of running and running memorabila. Offers articles about running events and presents autographed items, posters, and collectibles for purchase.
http://www.runningpast.com

Running the Planet
Offers descriptions of where to run and walk in the cities of the world, as told by the locals. Helpful for travelers, trip planners and travel agents.
http://www.runtheplanet.com/

Running USA
The official Running USA and USATF Distance Running Site. Offers events calendar, media center, results, rankings and records, administration and links.
http://www.runningusa.org/

Running/Jogging from About.com
Guide offers regular features, forums and chat as well as nearly 500 tested links to training tips, running gear, hashing, trail running, youth, masters, for the ladies, and ultra running.
http://running.about.com/

The Running Log
Allows the user to record, review and analyze running, biking, and swimming workouts. Requires a free membership.
http://www.therunninglog.com/

Time-to-Run
Articles from nutritionists, physiotherapists, coaches, sports doctors, exercise physiologists, massage therapists and a calendar of events around the world.
http://www.time-to-run.com/

TowerRunning.com
Includes schedules of races, racers, list of towers and skycrapers, and links.
http://www.towerrunning.com

United States Corporate Athletics Association
Regional and national running events, with news items, past results, pictures, officer listing and contacts.
http://www.uscaa.org/

USATF Road Running Information Center
News, records, measurement, running circuits.
http://www.runningusa.org/index_ldr.shtml