May 2

May 2 - May 3

Spring Lock Haven Regatta

MOD-SO-J CLSES

Susquehanna River

Lock Haven, PA

May 8

May 8 - May 17

2026 World Jet Boat Marathon Cha...

JRR;W

Payett,Salmon,Snake,St.Joe rivers

Emmet, ID

May 12

May 12

HARM Vintage Unlimited Spring Te...

VINTAGE

Lake Washington

Seattle, WA

May 15

May 15 - May 17

Tom Thornton Jr regatta

PRO-MOD-SO-J CLSES

Mattanawcook Lake

Lincoln, ME

May 16

May 16 - May 17

Harford County Spring Nationals

INB

Bush River

Edgewood, MD

May 16 - May 17

2026 Spring Kickoff

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

Lake Minden

Nicolaus, CA

May 16 - May 17

Phantom race Days

MOD-SO-J CLSES

Phantom Lake

Mukwonago, WI

May 22

May 22 - May 25

Boatnik 2026

SE-JET SPRI-OB RR-DRAG

Rogue River

Grants Pass, OR

May 23

May 23 - May 24

Newberg Memorial Weekend Boat Ra...

SO-OPC;R-PRO-KPH-MOD-J CLSES

Willamette River

Newberg , OR

May 23 - May 24

2026 Spring Franklin Regatta

MOD-SO-J CLSES

Justus Lake

Franklin, PA, PA

May 23 - May 24

Cambridge Classic

INB

Hambrooks Bay

Cambridge, MD

May 29

May 29 - May 31

Inboard Driving School

INB

Champions Lake Park

SPRINGFIELD, OH

May 30

May 30

Water Follies Spring Testing

VINTAGE-INB-UNL

Columbia River

Kennewick, WA

May 30 - May 31

Spring Tabor City Regatta

PRO-MOD-SO-J CLSES

Lake Tabor

Tabor City, NC

May 30 - May 31

Fireside 500

SO;D-J CLSES

Grand Lake

Presque Isle, Michigan, MI

May 30 - May 31

16th Annual Harry Brinkman Memor...

MOD;R-KPH-SO-J CLSES

Lake Clare

Huntington, IN

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Formula 400 Hydroplane

Formula 400 Hydroplane

No class description available.

Formula 400 Hydroplane Specifications

Minimum Length:
Minimum Weight:350 lbs.
Engine:Mercury 25 SS or Mercury 22.0 Powerhead 1970 to date. OMC Powerhead 1970 to date
Fuel:
Approximate Speed:65-70mph

Formula 400 Hydroplane High Point Winners

YearDriver/OwnerRacesPoints

Formula 400 Hydroplane National Champions

YearDriver/Owner

Formula 400 Hydroplane Records

RecordSiteDriver/OwnerSpeed
3 mile/3 laps
APBA
Aug 28, 2010
Dayton, OH
Rick Miller
Rick Miller
61.117
3 mile/4 laps
APBA
Aug 29, 2010
Dayton, OH
Rick Miller
Rick Miller
57.810
5 mile/3 laps
APBA
Jul 3, 1986
Decatur, IL
Barry Viola
Barry Viola
60.559
5 mile/4 laps
APBA
Sep 17, 1978
Yelm, WA
Bob Wartinger
Bob Wartinger
61.350
Kilo
APBA
Dec 5, 1987
Moore Haven, FL
Scott Anderson
Scott Anderson
75.587