Here are some of my favorite fitness and running-related websites
Magazines
Runners' World
Running Times
Trail Runner
Fitness and Mileage Tracking Sites
Dailyburn
DailyMile
RunKeeper
Gear, Stores and Shops
1BandID
Asics
Big Train
Brooks Running
GoSportID
GU Energy
National Running Center
Nike Running
PowerBar
Road ID
Running Warehouse
Saucony
Where to Find and Register for Races
Active.Com
Running in the USA