Ebike ride in countryside, Spokane to South E Street 510, Spokane

Goes through Riverside State Park on Centennial Trail on the West Side of the Spokane River. Route is all paved except W Mission Rd and Basalt, both of which can be avoided by taking a different way around. W Mission Rd in particular had some heavy gravel. Coolee Hite Rd in particular, along with Riverside State Park are particularly scenic. Ride was on a Saturday and traffic was light to moderate/light on the roads. Shoulders were mostly slim (white paint and about a foot or less) but varied from none to 3 feet.