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The Grindhouse

4.9 ★★★★★ 39 Google reviews · Kickboxing gym in Billings, Montana

Kickboxing gym Free trial Beginners welcome Kids & teens Women's classes Private lessons Competition team Affiliated

Affiliated gym — reviews and the gym's own info suggest it belongs to a known kickboxing or boxing-fitness franchise or network (think 9Round, iLoveKickboxing, CKO, TITLE Boxing Club or Jabz). Franchise gyms run a consistent class format and are often a friendly, familiar place to start. If a specific brand matters to you, confirm it on the gym's own site.

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 fitness levels welcome, including total beginners — no experience needed, and you get in shape by training, not before
  • Kids & teen classes kids and teen kickboxing classes (ages 4–14) — built around confidence, focus, and fun
  • Women's classes dedicated women's kickboxing classes — a welcoming space to start out and train
  • Private lessons one-on-one coaching available — a focused way to start or to work around a busy schedule; ask about availability and rates
  • Sparring sparring and partner work for members who want it — always optional, eased in gradually, with the coach controlling the contact
  • Competition team a competition team for members who want to test themselves in the ring — amateur kickboxing, muay thai, or K-1
  • Today see hours ·
  • Website & schedule mmabillings.com — book classes and see the live schedule
  • Phone +1 406-598-4060

Hours

Monday 12–2 pm, 4–8 pm
Tuesday 12–2 pm, 4–8 pm
Wednesday 12–2 pm, 4–8 pm
Thursday 12–2 pm, 5–7 pm
Friday 12–2 pm
Saturday 12–2 pm
Sunday Closed

Hours shift for holidays and class-schedule changes — worth a quick check before a special trip.

The classes they run

Kickboxing classes on the schedule at The Grindhouse, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids Kickboxing 4 mentions

“Jiu-Jitsu, Boxing, mma, Gi, NoGi, womens only classes, children’s classes!”

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💪 Women's Kickboxing

“Jiu-Jitsu, Boxing, mma, Gi, NoGi, womens only classes, children’s classes!”

All gyms that run women's kickboxing →

🏆 Competition Team 3 mentions

“Whether you want to compete, learn to defend yourself, or just want to find a new hobby this is the place you want to go.”

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🥊 Boxing 3 mentions

“I also had recently done some boxing training and wanted somewhere to train in that aspect as well.”

All gyms that run boxing →

👤 Private Lessons

“Whether you want one on one privates, or group lessons there is something for everyone here.”

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Other martial arts here

Kickboxing gyms are usually multi-discipline. Here's what else members mention training under the same roof at The Grindhouse — mined from their reviews and the gym's own info.

🥊 Boxing 3 mentions

“I also had recently done some boxing training and wanted somewhere to train in that aspect as well.”

Other gyms that also teach boxing →

🏟️ MMA 6 mentions

“No other Jiu Jitsu or MMA gym in Montana has the same depth of knowledge and experience that Will and his team have.”

Other gyms that also teach mma →

🥋 Brazilian Jiu-Jitsu 9 mentions

“The Professor, owner, Will Grundhauser is a well decorated Brazilian Jiu Jitsu Black Belt who is more than eager to show you the skills he’s acquired over the years.”

Other gyms that also teach brazilian jiu-jitsu →

🛡️ Self-Defense

“Myself and my two sons came in 6 years ago looking for some self defense training and found exactly what we were looking for and more.”

Other gyms that also teach self-defense →

Disciplines are mined from reviews and the gym's own info — they show what members have trained, not a formal class guarantee. If you specifically want muay thai, boxing, or MMA alongside your kickboxing, confirm the current schedule with the gym.

What members say

The things reviewers bring up again and again across 39 Google reviews — in their own words.

🧑‍🏫 expert, motivating coaching 2 mentions

“Will is a great coach and extremely knowledgeable.”

🌱 welcoming to beginners 5 mentions

“Once the unknown is out of the window this group has been one of the most welcoming/nice environments that I have experienced.”

🏆 active competition / fight team 3 mentions

“Whether you want to compete, learn to defend yourself, or just want to find a new hobby this is the place you want to go.”

🤝 friendly, family gym 11 mentions

“Fantastic gym, Sincerely look up to professor Will, he is intelligent and passionate about his practice, and their family has fostered an amazing community there.”

From the reviews

The Grindhouse is the best mma, jitsu gym in surrounding states. Anyone who goes to this gym learns something every time they go. The athletes who train there, compete with the very best. The environment is friendly and not intimidating. Will, the owner is very professional and friending. He is the best instructor.

★★★★★ — Lyndon, Jan 2018

The only intimidating thing about walking into this MMA gym is the step before you touch the door. Once the unknown is out of the window this group has been one of the most welcoming/nice environments that I have experienced. It's an amazing place to figure out the type of person you are, and who you could become.

★★★★★ — Billings, Feb 2023

After moving to Billings for work I wanted to try out Jiu-Jitsu as I had wrestled my whole life. I also had recently done some boxing training and wanted somewhere to train in that aspect as well. The Grindhouse DOES IS ALL!!!! Jiu-Jitsu, Boxing, mma, Gi, NoGi, womens only classes, children’s classes!

★★★★★ — Daniel, Mar 2023

I was in town for a few months and couldn’t ask for a better place to train. Will is a great coach and extremely knowledgeable. Everyone that trains here are very welcoming and friendly. Ive been to gyms around the country and this one has them all beat.

★★★★★ — Rich, May 2023

Excerpts from public Google reviews. Read all 39 reviews →

New to kickboxing? Start at The Grindhouse

The Grindhouse comes up as a beginner-friendly gym — noted on their own site. If you've never thrown a punch or a kick, that's exactly who a good beginners class is for. A few things worth knowing before your first week. First, you don't need to be fit or coordinated to start — you get in shape by training, not before it, and coaches scale every drill to you. Second, you won't be thrown into hard sparring — reputable gyms build the basics (stance, footwork, and punches and kicks on pads and bags) first, and any contact eases in gradually under a coach's control. Third, all fitness 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.

Check beginner classes on their site

Your first kickboxing class at The Grindhouse

Nervous about walking into a kickboxing 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 — stance, footwork, and punches and kicks on pads or a heavy bag — not hard sparring. Go at your own pace and rest whenever you need to; no one will bat an eye. What to wear: comfortable athletic clothes you can move and sweat in, and supportive trainers. What to bring: water, and hand wraps and gloves if you have them — many gyms lend loaner gloves for a first class, so it's worth asking when you call. As you keep training you'll add your own gloves and wraps (and shin guards once you start sparring). Sparring is optional and eases in gradually, once your basics 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.

Kickboxing is a contact sport. Warm up, pace yourself, listen to your coaches, and if you have any injuries or health concerns, mention them before class and check with a doctor if you're unsure.

Where to find The Grindhouse

712 Carbon St, Billings, MT59102

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More kickboxing gyms near Billings

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Memberships around $49/mo Ages 5–13

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2.1 miles away

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Listing verified July 2026 from public business records and member reviews. Something out of date? Report a correction. Own this gym? Claim your listing — it's free.