Marathon, horse shows, softball, tennis and more: OKC convention calendar update

As the weather begins to change and the leaves begin to fall, the OKC convention calendar keeps on rolling through autumn and into the cooler months with masses of marathoners, Morgan horses (and their owners), softballers, nuclear weapons specialists, veterans, tennis players, Quarter Horses (and their owners), rowers, primatologists, farm equipment manufacturers, communications engineers, Reining horses (and their owners) and more. Help us welcome them to Oklahoma City!

View a full calendar of upcoming conventions at www.visitokc.com/about/convention-calendar.

Related: OKC outdoor facilities attract sports leagues

• USA Softball 2021 High School Frenzy/Oklahoma Shootout (Sept. 24 - 25)
• Southern States Energy Board 2021 Annual Meeting (Sept. 27 - 29)
• Navy Nuclear Weapons Association 2021 Annual Reunion (Sept. 27 - Oct. 1)
• USS New Jersey Veterans 35th Annual Reunion (Sept. 29 - Oct. 3)
• Oklahoma City Memorial Marathon (Sept. 29 - Oct. 3)
• United States Tennis Association 2021 USTA National Championships, Weekend One (Oct. 1 - 3)
• Riversport OKC - 2021 Head of the Oklahoma Regatta (Oct. 1 - 3)
• LifeChurch Annual Family Renunion (Oct. 4 - 6)
• Oklahoma Secondary School Activities Assoc. (OSSAA) Fall High School Baseball State Championships (A-B) (Oct. 7-9)
• OSSAA High School Fast Pitch Softball State Championships (3A-B) (Oct. 7 - 9)
• United States Tennis Association 2021 USTA National Championships, Weekend Two (Oct. 8 - 10)
• American Morgan Horse Association 2021 Grand National Morgan Horse Show (Oct. 9 - 16)
• OSSAA High School Fast Pitch Softball State Championships (4A-6A) (Oct. 14 - 16)
• United States Tennis Association 2021 USTA National Championships, Weekend Three (Oct. 15 - 17)
• Philanthropy Southwest 2021 Annual Conference (Oct. 19 - 22)
• Aquaponics Association 2021 10th Annual Conference (Oct. 21  - 24)
• USA Softball 2021 Heart of America Fastpitch League Cup (Oct. 22 - 24)
• USA Softball National Council Meeting 2021 (Oct. 22 - 27)
• Alzheimer's Association Walk to End Alzheimer's (Oct. 23)
• ConferenceDirect 2021 CDX (Oct. 26 - 28)
• Oklahoma AFL-CIO 2021 Annual Convention (Oct. 27 - 29)
• USA Softball 2021 Fall Alliance Cup (Oct. 29 - 31)
• Farm Equipment Manufacturers Association 2021 FARM/EMDA Joint Conference (Oct. 31 - Nov. 4)
• American Quarter Horse Association 2021 AQHA World Championship Quarter Horse Show (Nov. 1 - 20)
• Association of Communications Engineers 2021 ACE School and RUS Symposium (Nov. 2 - 5)
• Nations Best Sports 2021 NBS Fall Athletic Market (Nov. 3 - 6)
• 2021 Oklahoma Cannabis Convention (Nov. 12 - 14)
• North American Lake Management Society 2021 International Symposium (Nov. 15 - 19)
• American Society of Primatologists 2021 Annual Conference (Nov. 18 -21)
• National Reining Horse Association 2021 National Reining Futurity (Nov. 25 - Dec. 4)
• International City/County Management Association 2021 National Brownfields Training Conference (Dec. 8 - 11)

Related: More horse shows coming to OKC this year