Mountain biking north of the airport on moderate local trails. Explore the rolling hills between 25 & 29 Roads. This area is great for riders of all abilities. It is not technical at all and your momentum going downhill will very often get you up the next not-too-steep hill. In the Book Cliffs, you don't follow a set trail like almost everywhere else .... instead, you choose a basic direction (northwest, for example) and just keep picking one of the three or four trails branching off of the one you're on for 90 minutes, then reverse your direction (go southeast) to get back to the parking area. There is a wide array of singletrack, doubletrack, hard-packed jeep roads & some really interesting narrow sandy ravines.