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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Professional Racing Outboard Menu

350CC Hydro

350CC Hydro

No description available

350CC Hydro Specifications

Minimum Length:
Minimum Weight:
Engine:Any motor over 257.5cc up to and including 350cc
Fuel:
Approximate Speed:

350CC Hydro High Point Winners

YearDriver/OwnerRacesPoints
2023JOSH HARNACK102771
2022JIMMY SMITH31600
2021ZACHARY MALHIOT41600
2018TIM FIHN82900
2017KEVIN VALENTINE61802
2016OLIVIA VALENTINE61269
2015JAMIE NILSEN72700
2014JAMIE NILSEN104450
2013JAMIE NILSEN83125
2012ZACHARY MALHIOT113159
2011ZACHARY MALHIOT122111
2010ZACHARY MALHIOT103369
2009CHRIS HELLSTEN52225
2008ZACHARY MALHIOT82900
2007ZACHARY MALHIOT102794
2006ZACHARY MALHIOT72025
2005BILL DIAMOND72253
2004BILL DIAMOND102900
2003CHRIS HELLSTEN72200

350CC Hydro National Champions

YearDriver/Owner
2023KURTIS NYDAHL
2021JOHN PALMQUIST
2018CHRIS HELLSTEN
2014KEVIN ELLISON
2013JAMIE NILSEN
2012ZACHARY MALHIOT
2011DAVID MITCHELL
2010CHRIS HELLSTEN
2009CHRIS HELLSTEN
2008JEFF KUGLER
2007ZACHARY MALHIOT
2006ZACHARY MALHIOT
2005DAVID MITCHELL
2004DAVID MITCHELL
2003DAVID MITCHELL
2002CHRIS HELLSTEN

350CC Hydro Records

RecordSiteDriver/OwnerSpeed
3 mile/3 laps
APBA
Sep 14, 2024
Yelm, WA
John Palmquist
Mike Schmidt
89.102
3 mile/4 laps
APBA
Sep 15, 2019
Yelm, WA
Ken Hehr
Ken Hehr
76.634
5 mile/3 laps
APBA
Mar 31, 1996
Lakeland, FL
Chris Hellsten
Chris Hellsten
93.168
5 mile/4 laps
WORLD
Sep 19, 1999
Yelm, WA
J. Sean McKean
J. Sean McKean
90.657
5 mile/5 laps
APBA
Apr 14, 1996
Lake Alfred, FL
Chris Hellsten
Chris Hellsten
84.270
Kilo
WORLD
Nov 24, 1995
Parker, AZ
Sean McKean
Sean McKean
113.408
1/4 mile
APBA
Oct 12, 2024
Lincoln City, OR
John Palmquist
John Palmquist
109.957