1. The Chicago Lakefront Trail stretches for 18.5 miles along the shores of Lake Michigan. The trail is open to walkers, runners, and cyclists, and provides stunning views of the lake and the city skyline. Along the trail, visitors can find several parks, beaches, and landmarks, including the Navy Pier, Grant Park, and the Museum Campus. The trail is also home to several events and festivals throughout the year, including the Chicago Marathon and the Air and Water Show.

2. The Chicago Lakefront Trail is open 24 hours a day, 365 days a year. There is no phone number available as it is an open public space.

3. There is no admission fee to use the Chicago Lakefront Trail. Visitors can access the trail using public transportation, including buses and trains, as well as by car and bike. Parking is available at several locations along the trail for a fee.