After riding on the Terry Hershey Park - Anthills, Pasadena - Armand Bayou, Houston Arboretum - Triangle, and all of the Memorial Park trails, I've came to know that trails in Houston suck big time. There's nothing fun except occaisional dips and raises. Tons of annoying roots sticking out try to entangle you, but the turns are admirable though.
Summary: mountain biking cannot be enjoyed in this place as flat as a roti.

Anyone want to go to Austin for some adventure riding sometime soon?