The Unlimiteds are powered by turbine-engines that produce around 3,000 horsepower and World War 2-era Allison V-12’s that kick out around 2,500 horsepower – allowing our drivers to reach speeds of nearly 200 mph and producing a massive 60-foot tall, 300-foot long wall of water called a “roostertail” behind them. With very few restrictions, these majestic hydroplanes race in front of shorelines packed with fans on bodies of water throughout the United States.

Follow the H1 Unlimited Hydroplane Racing Series in 2024:

The season kicks off in Guntersville, Alabama, home of the Guntersville Lake Hydrofest. 2024 marks the second year of a new, ultra-fast course layout – where the fastest qualifying lap in the past 20 years was set by the U-40 Bucket List entry at 171.294 MPH!

From there, the boats head to Madison, Indiana, home of the only community-owned hydroplanes on the circuit for the Madison Regatta on the Ohio River.

The next stop is the Columbia River in Kennewick, Washington for the Columbia Cup and a sunbaked weekend on one of the super speedways of the series – look for speeds topping 200 mph.

After Tri-Cities, we return to Seattle for the Seafair Cup. As a “home” race for most of the H1 Unlimited teams, this is the one everyone wants to win, and will usually include the most entries of the season.

Following Seattle, we return to Detroit, the home of the APBA Gold Cup* for the first time since 2018. If you haven’t seen an Unlimited carve through the incredible Roostertail Turn, it is a must-see, bucket list event!

The season finishes on beautiful Mission Bay in San Diego, California at Bayfair*. The finale is sure to include a battle for the season high points championship, guaranteeing deck-to-deck battles until the final checkered flag!


If you haven’t experienced H1Unlimited hydroplane racing in person, choose an event, get down to the shore and see what makes this “the most spectacular sport on the water.”