The Bill Riley Trail is a 2.7-mile paved pathway that winds through wooded areas, including Ashworth Park, and crosses the Raccoon River via a rustic trestle bridge. The trail is named after Bill Riley, a member of the Des Moines Park Board who played a significant role in raising funds for the city's trail system. It is popular among cyclists, walkers, and runners, and although dogs are welcome, they must be kept on a leash. Parking is available near the Ashworth Memorial Pool in Ashworth Park, and in Gray's Lake Park.