This 10-mile paved urban trail, popular to say the least, follows the almost-always-dry Rillito River across the north valley. It's not difficult to figure out why Tucsonans love this trail. The beautiful desert setting near the city's heart is convenient and user-friendly, with mile markers, drinking fountains and restrooms along the way. Its heavy use is nearly a draw in itself. Riding along on a temperate Sunday morning, the trail crowded with your fellows, you get this warm feeling that you are part of a community, not just some lonely peddler.
Runners up:
2. Fantasy Island
3. TIE
Mount Lemmon
Old Spanish Trail