Around the country old train routes are being turned into multi-use paths. I've been on a bunch of them, but few compare to the Trail of the Couer d’Alenes. This decommissioned train route follows a backcountry route across northern Idaho, from Plummer, a prairie town near the Washington border, to Mullan, a mountain town near the Montana border. In between it crosses a state park, a lot of lake, river, and marsh, the cute town of Harrison, and the historic and pretty Silver Valley. It’s open to walking, skiing, in-line skating, and biking, with several campgrounds along with way and a few places to buy provisions.