Centennial Traill State Park in Spokane County, Washington is one of the Washington State Parks. It is managed by Riverside State Park and consists of the 37 miles (60 km) Spokane River Centennial Trail following the meandering course of the Spokane River from Nine Mile Falls to the Idaho border. The listed coordinates correspond to the location of Nine Mile Falls. Available activities include hiking, biking, swimming, fishing, birdwatching, mountain biking, interpretive activities, and wildlife viewing.
Coordinates: 47°46′31″N 117°32′39″W / 47.775167°N 117.544113°W