At 225 miles, the Katy Trail is America’s longest rail-trail. Mellow mountain biking through rural Missouri along the Missouri River. A host of B&B’s and wineries along the route mean you can ride the entire Katy with a bike and credit card, and sample lots of heartland vino along the way. Some good mountain bike trails spur off the Katy as well.
3.Kettle Valley Railway
360 miles of rivers, lakes, and mountains in remote British Columbia, the Kettle Valley Railway is probably the most epic rail-trail on earth. Forest fires burned a series of spectacular wooden trestles in 2003, but they have since been replaced. Not technically challenging, but remote and long.