The signed Earthworks bike route lets visitors experience four internationally recognized landscape-art installations up close. Choose a self-guided tour, from 12 to 23 miles. The family-friendly 12-mile route is a flat ride to the Green River Natural Resources Area and back. The intermediate loop travels 20 miles through the Green River Natural Resources Area to Lorna Jordan’s Waterworks Gardens. The mostly flat ride includes a single, long incline approaching Waterworks Gardens. Seasoned cyclers can opt for the advanced ride, which follows the 20-mile route and includes an extra kick—a steep hill climb up to the Robert Morris Earthwork.