Jun 27

Jun 27 - Jun 28

51st Annual Idaho Regatta

INB-SO-J CLSES

Snake River

Burley, ID

Jun 27 - Jun 28

Richland Regatta

VINTAGE-INB-KPH-SO-OPC-J CLSES

Columbia River

Richland, WA

Jun 27 - Jun 28

5th Annual Hydrofest on the Kenn...

PRO-MOD-SO

Kennebec River

Fairfield, ME

Jun 27 - Jun 28

Atlantic City Offshore Grand Pri...

OS;N

Atlantic Ocean

Atlantic City , NJ

Jun 27 - Jun 28

Mark Wheeler and Don Holden Memo...

PRO-KPH-MOD-SO-J CLSES

St. Joesph River

Constantine, MI

Jul 3

Jul 3

Wrangell Boat Races

SE

Zimovia Straits

Wrangell, AK

Jul 3 - Jul 5

2026 MADISON REGATTA

INB-UNL

Ohio River

Madison, IN

Jul 4

Jul 4 - Jul 5

Lower Rogue Challenge

SE-OB RR

Rogue River

Gold Beach, OR

Jul 10

Jul 10 - Jul 12

Les Régates de Valleyfield

INB

St-Laurence River

Salaberry-de-Valleyfield, CN

Jul 11

Jul 11 - Jul 12

Silver Cloud Hotels and Codling ...

VINTAGE-INB-KPH-MOD-SO-OPC-J CLSES

Black Lake

Olympia, WA

Jul 17

Jul 17 - Jul 19

2026 Stock Outboard Nationals - ...

SO;N-J CLSES

Lake Neatahwanta

Fulton, NY

Jul 18

Jul 18 - Jul 19

Rumble in the Hills

INB

Rocky Fork State Park

Hillsboro, OH

Jul 18 - Jul 19

Northland Mardi Gras Gran Prix

OPC

Flambeau River

Ladysmith, WI

Jul 23

Jul 23 - Jul 26

2026 APBA Modified / Junior Nati...

MOD;N-J CLSES

Saint Joseph River

Constantine, MI

Jul 24

Jul 24 - Jul 26

Apollo Columbia Cup

VINTAGE-INB-UNL

McNary Pool, Columbia River

Kennewick, WA

Jul 25

Jul 25 - Jul 26

Leonardtown Bash on the Bay

VINTAGE

Breton Bay

Leonardtown, MD

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Grand Prix Hydroplane

Grand Prix Hydroplane

Grand Prix Hydroplane - supercharged competition! This professional level GP class provides all the noise and excitement you can handle. The 1500 horsepower blown V-8s, based on big block Chevrolet design, make the most noise and throw the biggest roostertails this side of anywhere! Limitations are few; beyond the 468-cubic inch engine displacement, it's Hot Rod City and up to the ingenuity of the builder. Grand Prix hydros are the biggest and baddest of the bad!

Grand Prix Hydroplane Specifications

Minimum Length:23'
Minimum Weight:2700 lbs. including driver
Engine:Supercharged Big Block Chevrolet V-8, maximum displacement 468 cubic inches
Fuel:Methanol (alcohol) or racing gasoline per APBA specs
Approximate Speed:170mph

Grand Prix Hydroplane High Point Winners

YearDriver/OwnerRacesPoints
2023JEFF BERNARD101430
2022MICHAEL GRENDELL101860
2021JEFF BERNARD71105
2019JERRY HOPP101460
2018LARRY LINN101713
2017BOB SCHELLHASE122573
2016BOB SCHELLHASE101355
2015BOB SCHELLHASE101305
2014BOB SCHELLHASE101345
2013JERRY HOPP121760
2012BOB SCHELLHASE131925
2011BOB SCHELLHASE71215
2010PIERRE MAHEU91668
2009DENNIS JOHNSON101633
2008DENNIS JOHNSON7850
2007ROBERT G ZABADY91095
2006MARIO V MARALDO60
2004MARIO V MARALDO7575
2003KEN BRODIE SR71190
2002KEN BRODIE SR5250

Grand Prix Hydroplane National Champions

YearDriver/Owner
2022ANDREW TATE
2018TKO RACING/ THOMPSON BROTHERS RACING LLC
2016MARIO V MARALDO
2015R ROYCE RICHARDS
2011MARIO V MARALDO
2010HUEY NEWPORT
2008DENNIS JOHNSON

Grand Prix Hydroplane Records

RecordSiteDriver/OwnerSpeed
5 mile/3 laps
APBA
Jun 14, 2015
Soap Lake, WA
Jerry Hopp
Jerry Hopp
110.125
5 mile/4 laps
APBA
Jul 13, 2014
Olympia, WA
Jamie Nilsen
Scott Pierce
116.89
5 mile/5 laps
WORLD
Jul 21, 2013
Waterford, MI
Bert Henderson
Bert Henderson
112.768
Kilo
APBA
Sep 21, 2019
Lincoln City, OR
Greg Hopp
Jerry Hopp
162.097
1/4 mile
APBA
Apr 2, 2016
Oroville, Ca
Jerry Hopp
Jerry Hopp
170.62