A very informative online version of the popular running magazine "Runners World". You can find just about anything related running at this site, including information on training, racing, nutrition, care and prevention of injuries, running shoes, etc.

Road Runner Sports is a company that sells running clothes, shoes, supplements, heart rate monitors and many other items related to running. This site also includes good information on determining which kind of running shoe to wear.

The Cornbelt Running Club is one of the largest running clubs in the United States. This informative site includes many links to other running related sites.

This is the official site for the New York City Marathon.

This is the official site for the Chicago Marathon.

This site offers an online training program for marathoners of all levels.

Consolidated ultra running information, advice, and links to other related sites. This is a very informative site for any one interested in ultra (>26.2 miles) distance running.

Up to date information on ultra distance events

Interesting running site with chat, software downloads, and other cool things for runners