The Bridge to Bay Trail extends 37.5 miles from St. Clair County's northern border; under the Blue Water Bridges; through Port Huron, Marysville, St. Clair, Marine City and Algonac; past state and municipal parks, museums, gazebos and lighthouses. It starts in Algonac State Park and ends with continuous travel to Greig Park, St. Clair. Further sections north include Marysville, Port Huron and Fort Gratiot Township. It connects community with community for walkers, joggers, strollers and bicyclists of all ages. Various sections include boardwalks, river walks, rail trails, safety paths and bike paths. Sections of the trail are also located in and around Algonac State Park and East China.