East of Seattle, the 108 mile John Wayne Pioneer Trail follows the former roadbed of the Chicago-Milwaukee-St. Paul-Pacific Railroad stretching from the Cascades to the Idaho border and is open to horseback riding. The 100-mile portion from Cedar Falls (near North Bend) to the Columbia River near Vantage is managed as Iron Horse State Park. This gravel surfaced trail is open to hikers, bikers, equestrians, and to snowmobiles and cross-country skiers in winter.
The route links the heavily populated Puget Sound region of western Washington over the Cascades to the more rural and agricultural lands of eastern Washington. This multi-use trail is an essential link in the emerging cross-state trail that will eventually connect Idaho to the Pacific Ocean.
A popular section stretches 28 miles from North Bend to the Snoqualmie Pass.