Jun 6

Jun 6 - Jun 7

Hardys Race for the Lake

INB;N

Lake Decatur

Decatur, IL, IL

Jun 6 - Jun 7

Piney Point Rumble on the River

VINTAGE

ST. GEORGES CREEK

PINEY POINT, MD

Jun 6 - Jun 7

Rumble on the River

PRO-KPH

Menominee River

Marinette, WI

Jun 6 - Jun 7

Newt Grant Memorial Race

OB RR

Trinity River

Willow Creek, CA

Jun 6 - Jun 7

2026 Rockin Regatta hosted by Pi...

MOD;R-MOD;D-SO-J CLSES

Allegheny River

Creighton, PA, PA

Jun 6 - Jun 7

5th Annual Howard Shaw Memorial ...

MOD;N-SE-PRO-KPH-SO-J CLSES

Silver Lake

Everett, WA

Jun 13

Jun 13 - Jun 14

Entiat Vintage Raceboat Regatta

VINTAGE

Lake Entiat

Entiat, WA

Jun 13 - Jun 14

ASBR Pro Racing Series Race #2

JET SPRI

State Fair Park Jetsprint Track

Yakima, WA

Jun 20

Jun 20 - Jun 21

Governors Cup Regatta

INB;D

Grand Lake St Marys

Celina, OH

Jun 20 - Jun 21

Syracuse Vintage Race Boat Regat...

VINTAGE

Onondaga Lake - Willow Bay

Liverpool, NY

Jun 20 - Jun 21

COA Annual Thompson Regatta

PRO-MOD-SO-J CLSES

West Thompson Lake

Thompson, CT

Jun 20 - Jun 21

2026 Joe Whetstone Memorial Grea...

MOD;D-SO-J CLSES

Saint Joseph River

Constantine, MI

Jun 20 - Jun 21

John Paramore Memorial Regatta

PRO;D-KPH-MOD-SO-J CLSES

Cullaby Lake

Warrenton, OR

Jun 20

Webbs Slough Jet Sprint Boat Ra...

JET SPRI

Webbs Slough

Saint John, WA

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

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Modified Outboard Menu

Modified Outboard

Modified-Outboard

MOD racers aren't afraid to get their hands dirty - The goal in this category is to pull every last bit of horsepower out of your engine. In Modified Outboard, the engine builder's skill is just as important as the driver's. These boats are easily recognizable by their specially tuned pipes that make them as loud as they are fast. Because engines are constantly being modified to make the absolute most of what the rules allow, the competition is always fierce. Join the ranks of some of the best engine builders in the world, join Modified Outboard Racing.

Whether hydroplane or runabout, Modified classes are defined by the size of their engines (displacement). The numbers in the class names give you the approximate engine size in cubic centimeters. The 250ccMH, or 250 cubic centimeter Mod Hydro, is smaller than the 850ccMH, or 850 cubic centimeter Mod Hydro. Some classes have minimum weights, which increase with engine size. The smaller classes are often a good fit for younger, lighter drivers (14-year-olds may drive 200-250cc Mod classes, for example). The larger classes take considerable skill and experience. Propellers of four blades or less are used, and your prop choice can affect your speed enormously.

Modified Outboard Resources

Modified Outboard Classes