The St. George, Utah Urban Trail System is constantly growing and now totals nearly 50 miles. Click map below to enlarge map, or go here to see it in full.
I parked at their new Confluence Park and biked the Virgin River South, Virgin River, Hilton, and St. Clara River Trails, and below are some photos from the ride. All the trails are paved and in mostly good condition.
This interested me because of the way they protect trail users from golf balls as the trail passes a driving range...
Here's an interactive map for their trails and other amenities.