The 20 mile ride is on a sidewalk for about half then asphalt bike paths. I'm not looking for a moutain bike or a trick bike etc, something like http://picasaweb.google.com/camnut/G...88647226190418 but maybe not so expensive. I am going to be biking a lot though on it for exercise and because I enjoy it.

The bike paths are usually always asphalt or cement.

Sorry for not being specific before.