West of Salina and north of Wilson on Wilson Lake, the 945 acre Wilson State Park has a hiking trail network, which includes the 13 mile Switchblade Grass Bike Trail. The winding trails roll through open prairie grass meadows. Note: these trails were designed for mountain biking, but are open to hikers as well -- just watch out for the bikers coming around corners.
To reach the trailhead from US 70, use Exit 206. Head north on SR232 for 5.25 miles. Turn left heading west on Shoreline Road over the bridge for 1.4 miles. Turn right into the park for 1.1 miles. Turn left into the Switchgrass trailhead parking area.
Overall, Wilson State Park is the 8th most popular hiking trail of all 8 hikes in Kansas.