The Spokane River Centennial Trail is a designated National Recreation Trail. It was designated a National Recreation Trail on May 24, 2010, joining 30 other recreational trails in 15 states.
The Centennial Trail is a 37-mile paved recreational trail for pedestrians and non-motorized vehicles. The trail stretches from Sontag Park in Nine Mile Falls, Washington to the Washington / Idaho state line. It continues another 24 miles beyond the Washington state border into Idaho as the North Idaho Centennial trail through Post Falls and into Coeur d'Alene.
Please note that the Washington State Discover Pass is only required at Centennial Trail "Trailheads" within Riverside State Park. The pass is not required at other trailheads (Maringo, Islands, Barker, etc.).
Six Year Maintenance Plan
The Centennial Trail Coordinating Council (made up of State Park, Spokane Valley, Spokane, Spokane County, and Friends of the Centennial Trail [non-voting member]) has adopted the first ever maintenance plan for the Centennial Trail. The plan lays out a road map for utilizing the Centennial Trail Joint Board Fund - a fund that each voting member of the Council contributes $20,000 a year towards - to maintain and improve the trail.
Projects scheduled for 2016 include pot hole repair, edge repair, and crack seal work along the entire Washington stretch of the trail. In 2018, the plan's goal is to complete a new asphalt surface (overlay) along a 12-mile stretch of the trail, from the Idaho Stateline to Denny Ashlock Bridge (near Plante's Ferry).