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Nibiru Jiu-Jitsu
4.8 ★★★★★ 44 Google reviews · Muay thai gym in Sun Prairie, Wisconsin
Authentic Thai — reviews and the gym's own info point to coaching rooted in Thailand's muay thai tradition. If lineage matters to you, ask where the coaches trained and about their kru.
Plan your first class
- Free trial or intro class most gyms welcome new members with a free trial or intro class — check their site or give them a call to book your first session
- Beginner-friendly all levels welcome, including total beginners — you don't need to be fit or have any experience to start
- Kids & youth classes kids and youth muay thai classes — built around discipline, focus, and confidence
- Fight team a competition team for members who want to test themselves as amateur fighters
- Today see hours ·
- Website & schedule nibirubjj.com — book classes and see the live schedule
- Phone (608) 886-9390
Hours
| Monday | 9–10 AM, 5:30–8 PM |
| Tuesday | 6–7 AM, 5:30–8 PM |
| Wednesday | 9–10 AM, 5:30–8 PM |
| Thursday | 6–7 AM, 5:30–8 PM |
| Friday | 9–10 AM, 6:30–8 PM |
| Saturday | 9–10 AM |
| Sunday | 10 AM–12 PM |
The classes they run
“I started training here as a beginner with absolutely no background in any kind of physical combat sport, and continue to be challenged as I’ve progressed.”
“With their smooth and steady pace and their step by step tutorials it’s a place id 100% recommend for your kids, and even you!”
“Everyone is welcome - men, women, teens, kids, military, LEO - everyone!”
“Whether you’re looking for a new hobby, or to compete, this is a great place to train and learn.”
“Great gym for having fun, learning self defense and training hard.”
Other martial arts here
“If you are a student of Brazilian Jiu-Jitsu or you are wanting to give it a try, definitely check out Leviathan BJJ in Sun Prairie.”
What members say
“The coaches are incredibly knowledgeable patient and genuinely care about each student’s progress whether you’re brand new or highly experienced.”
“I started training here as a beginner with absolutely no background in any kind of physical combat sport, and continue to be challenged as I’ve progressed.”
“The gym culture is extremely positive and welcoming; everyone is there to learn and to help their training partners improve.”
“I had come with a different martial arts background and love the application of my past training and skills to the new format.”
“The instructors are patient and detail-oriented, the cardio is no joke, and the rolling is technical and respectful.”
“Would recommend if you just want to casually train, lose some weight or go hard for competition.”
From the reviews
This school opened in 2022 and I wish I would have heard of it sooner. My first class had a mix of age groups and people of all sizes. They were very knowledgeable and inviting. I had come with a different martial arts background and love the application of my past training and skills to the new format.
Just started training and Coach Robert and Krysta are amazing. I love the coaching and as a large guy I’m allowed to work at my own pace, but still provides a challenge. I never thought I’d get into Brazilian Ju Jitsu, but Leviathan has me loving my experience.
Robert is the man. I popped in for a day, as I’m here for Madison for work. These guys are very hospitable, and I learned some awesome technique for my toolbox as a brown belt. Many of osses guys!
If you are a student of Brazilian Jiu-Jitsu or you are wanting to give it a try, definitely check out Leviathan BJJ in Sun Prairie. It is located right behind Gus’s Diner on Highway 19.
New to muay thai? Start at Nibiru Jiu-Jitsu
Nibiru Jiu-Jitsu comes up as a beginner-friendly gym, going by their listing and members’ reviews. If you've never thrown a punch or a kick, that's exactly who a good beginners program is for. A few things worth knowing before your first week. First, you don't need to be fit to start — you get in shape by training, not before it, and coaches scale the conditioning to you. Second, you won't be thrown into sparring — reputable gyms build fundamentals (stance, footwork, and the basic strikes of the "art of eight limbs") for weeks before any contact, and sparring stays optional. Third, all levels really are welcome — ask about a dedicated beginners or fundamentals class time so your first session is alongside others who are also starting out. Most gyms are happy to let you watch or try a class first, so reach out before you commit.
Your first muay thai class at Nibiru Jiu-Jitsu
Nervous about walking into a muay thai gym for the first time? Almost everyone is, and good coaches expect beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling the basics on pads and bags — not fighting. Rest whenever you need to; no one will bat an eye. What to wear: shorts or athletic wear and a t-shirt; you'll train barefoot on the mats. What to bring: water and hand wraps if you have them — many gyms lend gloves for a first class, so it's worth asking when you call. As you keep training you'll add your own gloves, wraps, a mouthguard, and shin guards. Sparring is optional and comes later, once your fundamentals are solid. Arrive 10–15 minutes early to sign a waiver and meet the coach. It gets easier fast — most people feel far more at home by their third class.
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