The Cedar Valley Trails are the best outdoor reason to stop in Cedar Falls. The network links riverfront paths, old rail corridors, parks, and neighbouring Waterloo, making it easy to walk or bike without spending the whole time beside traffic.
For visitors, the most useful stretch is the river-and-downtown area, where a short ride gives you a good feel for the town. In summer, bring water and insect repellent; in winter, check trail conditions before committing to a long route.