St. Clair Riverfest and River Classic Offshore Powerboat Race Watch the explosive action as thundering powerboats charge down the St. Clair River in a race to be the fastest machine on the water! The Race: Powerboats will race in different classes as part of the Great Lakes Silver Cup Series and the Offshore Super Series. Riverfest Activities: Hospitality tents, family friendly activities, music, game and live entertainment will line the river to join in the excitement. St. Clair is serenity found. Its location is just 40 miles north of Detroit and only a few miles south of Port Huron, resting on the banks of the forever blue St. Clair River. This historic little city of tree-lined streets offers unique shops, cafés, pubs and specialty restaurants. The center piece of downtown St. Clair is Palmer Park; the community’s defining public space with the longest fresh water boardwalk in the world! The park along with Rotary Park and the boat harbor are now equipped with free wireless internet. St. Clair hosts the spectacular St. Clair Art Fair, boasts a historical museum and provides a modern boat harbor. It is the home of summer concerts on the boardwalk and thundering offshore powerboat racing.A journey to the beautiful Blue Water Area truly is not complete without a few days spent enjoying St. Clair – whether you choose to spend your time on a golf course, a planned fishing expedition, strolling on the boardwalk or lounging in Palmer Park while watching the freighter traffic just a few feet off shore. Maybe a walking tour of the city’s neighborhoods with their vintage homes and historic churches will provide the relaxation you’re seeking. You can do it all or do nothing at all.