Sun Prairie’s Home for Combat Sports
Whether you're just starting your fitness journey or looking to enhance your routine, Nibiru Brazilian Jiu-Jitsu provides a supportive and motivating environment. Our team is dedicated to helping you achieve your personal goals, ensuring you have the best experience possible.
Adult BJJ
Adult Muay Thai
Kids BJJ
Kids Muay Thai
Trusted by Our Members
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"I came in as a walk-in. Everyone- students and instructors were very welcoming. The whole class introduced themselves to me and were great to work out with. Robert did a great job of teaching technique and explaining how to do them. There's a great culture going on here."
– Tim O.
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"Awesome gym! Coach Robert is very knowledgable AND a good instructor. The gym culture is extremely positive and welcoming; everyone is there to learn and to help their training partners improve. If you're in or around Madison, drop in and take a class. I can't recommend this gym highly enough."
– James C.
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"Great gym to learn BJJ and Muay Thai, very knowledgeable and understanding coaches. Whether you’re looking for a new hobby, or to compete, this is a great place to train and learn."
– Andrew W.
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"Best place to train Jiu Jitsu. Relaxed welcoming atmosphere. All age group and state of physical fitness are there; a wide range of people to train with."
– Ricardo B.
Announcements
We’ve moved! Check out our new location at 916 Windsor St. in Sun Prairie.
We are hosting a seminar with world champion Renato Canuto on October 18th.
Upcoming Tournaments
Members at Nibiru regularly train for Jiu-Jitsu competitions. We are targeting the following competitions:
Tap Cancer Out, Oak Lawn, IL - 10/11/2025
Submission Challenge, Fairview Heights, IL - 11/01/2025
Grappling Industries, Wisconsin Dells, WI - 12/06/2025
Affiliation
Nibiru BJJ an official affiliate of Checkmat Jiu-Jitsu and is the only Checkmat gym in the state of Wisconsin.