http://www.walkjogrun.net/

great for sharing detailed routes anywhere in the world you ride - I just added one of my commute routes and my trail running route

I have used http://www.mapmyride.com/ to both post rides and find rides in different areas. Works pretty nicely.

http://www.walkjogrun.net/

great for sharing detailed routes anywhere in the world you ride - I just added one of my commute routes and my trail running route

Another site that provides this same service: http://www.bikely.com/
More routes, more features, and just recently purchased by Cycling Plus Magazine. It's becoming more and more UK centric. Bad news for me, but good news for you.

Check it out.

Scot