Originally Posted by
clydesdale
Why thank you. Do you ride the single speed on long rides? I have a Fixie and I would not dream of riding it over a 6 mile route. My knees kill me after 2. Plus I would be scared to death bombing down some of these hills in Colorado.

You should really check your set up on your fixed gear... if your knees hurt after two miles there is something wrong there.
Descending hills in the winter on a fixed gear is a wonderful experience and the control is amazing.
I ride a fixed gear for work (several actually) and have done some fairly long fixed rides and been happy as happy can be with the bike.