Equipment
http://www.aquasphereusa.com/
http://baysixusa.com/
http://www.racermateinc.com/
http://fittobetriedbikes.com/

Race info
http://www.bostonmarathon.org/BostonMarathon/Qualifying.asp
http://www.trifind.com/
http://www.active.com/
http://vnews.ironmanlive.com/
http://www.marathonguide.com/
http://www.ironmannorthamerica.com/
http://xterraplanet.com/

Stores and fitting specialists
http://www.insideoutsports.com/
http://www.theracersedge.net/
http://www.runnersedgeboca.com/
http://www.cyclingspecifics.com/

Sports Nutrition
http://www.e-caps.com/

Human performance labs
http://www.meredith.edu/hped/ess/lab/

Other training resources
http://www.posetech.com/
http://www.teamintraining.org/hm_tnt
http://www.ais.org.au/
http://www.totalimmersion.net/