On August 25-26, 2018 is the Detroit Hydrofest Boat Racing on the Detroit River, in Michigan, presented by the Metro Detroit Chevy Dealers. The boat races will feature hydroplanes racing at 200 mph and on Friday the general admission is Free from 1pm to 7pm. The boats will compete for two prestigious trophies, the HRL Grand Prix Hydroplane is powered by a supercharged 468ci big-block engine. The H350 Hydroplanes with 350ci small block Chevy engines have speeds of 120 mph. The event will have live music and entertainment plus a hot rod show visit detroitboatraces.com for all the details you can also sign up for there weekly newsletter with upcoming event dates and information.