2025 SPRING MUAY THAI CHAMPIONSHIPS
Open to all Amateur and Professional Muay Thai Athletes, US and International Federations Worldwide
March 27-30, 2025
Arizona Athletic Grounds, Mesa, Arizona
2025 FALL MUAY THAI CHAMPIONSHIPS
REGISTRATION NOW OPEN!
Open to all Amateur and Professional Muay Thai Athletes, US and International Federations Worldwide
Nov 20-23, 2025
Arizona Athletic Grounds, Mesa, Arizona
Resources
Resources for Athletes
Rules
The US Open Official Rules ensure fairness and promote safety.
Support
Questions? Check out our FAQs. If you still need help, please submit a trouble ticket to reach our support team.
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Sponsors
special Thanks to our sponsors
“A great & well run event! It is extremely difficult to manage a crowd of that size with that many variables, but the folks at USMTO and Siam did it very well. Weigh ins, medicals, etc. were done very quickly compared to other events. The brackets & bout orders were done the night before which gave our team enough time to plan logistics for the next day.”
Emily Ann Nielsen, Revolution Muay Thai – Athlete
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Register to Compete!
Start by going to your preferred event page, and begin the registration process.