No, I have not but my brother and a group of his friends (all from Durango, CO) biked the White Rim Trail at Canyonlands last spring and had the time of their lives. We visited the Islands in the Sky portion of Canyonlands on this last trip. It is on the mesa looking down on the White Rim (about a 1,000 ft. below) and it is spectacular. Below the White Rim (another 1,000 ft.) are the Green and Colorado Rivers and their confluence. There is a commercial by Mitsubishi currently being aired that shows one of its sports cars driving along the White Rim.

John in drying-out San Diego