Green means going off the grid in the 4,000-acres of state park, 57 miles of winding river, lush farmland and pristine golf. Located in Central Pennsylvania, the region, often called “Happy Valley,” is surrounded by some of the country’s top outdoor. Find over 10 of the best hiking routes in Green River. Maps, races, & running clubs in Green River, WY. Track & analyze your hikes. Best Way To Filter…