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Rumble Boxing

4.3 ★★★★☆ 177 Google reviews · Kickboxing gym in Sunnyvale, California

Beginners welcome Kids & teens Cardio kickboxing 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

  • Beginner-friendly all fitness levels welcome, including total beginners — no experience needed, and you get in shape by training, not before
  • Cardio kickboxing classes high-energy cardio kickboxing on the bags and pads — a fun, sweaty workout built for fitness and weight loss, at your own pace
  • Kids & teen classes kids and teen kickboxing classes — built around confidence, focus, and fun
  • Today see hours ·
  • Website & schedule rumbleboxinggym.com — book classes and see the live schedule
  • Phone (408) 459-7888

Hours

Monday 5:30 AM–8 PM
Tuesday 5:30 AM–8 PM
Wednesday 5:30 AM–8 PM
Thursday 5:30 AM–8 PM
Friday 5:30 AM–8 PM
Saturday 7:30 AM–12:30 PM
Sunday 7:30 AM–12:30 PM

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 Rumble Boxing, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🔥 Cardio Kickboxing 5 mentions

“The studio is always clean and well-organized, which makes for a great workout environment.”

All gyms that run cardio kickboxing →

💪 Women's Kickboxing

“As a woman, trying to join a male dominated sport, I really appreciated the support.”

All gyms that run women's kickboxing →

🌱 Beginners 2 mentions

“The workouts are challenging yet adaptable for all fitness levels, and the energy in every session keeps you motivated to push your limits.”

All gyms that run beginners →

🥊 Boxing 17 mentions

“While I'm new to boxing, I often take exercise classes like Pilates and hot yoga, and can say he's by far one of my favorite trainers I've interacted with.”

All gyms that run boxing →

Kickboxing Bootcamp 2 mentions

“Highly recommend this boxing gym for a good HIIT session.”

All gyms that run kickboxing bootcamp →

Other martial arts here

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

🥊 Boxing 17 mentions

“While I'm new to boxing, I often take exercise classes like Pilates and hot yoga, and can say he's by far one of my favorite trainers I've interacted with.”

Other gyms that also teach boxing →

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 177 Google reviews — in their own words.

🧑‍🏫 expert, motivating coaching 3 mentions

“I’ve taken classes with Katie, Jose, and several other incredible instructors, and after every class, you walk out feeling like you conquered something.”

🌱 welcoming to beginners 5 mentions

“JT and Isaiah are pretty intense so if you’re looking for a first time class i would do one of the others i mentioned.”

🎉 fun, high-energy classes 7 mentions

“It felt like a party, the music was bumping and it helped energize us for a great workout!”

💦 killer cardio workout 4 mentions

“The studio is always clean and well-organized, which makes for a great workout environment.”

🧼 clean, well-equipped gym 4 mentions

“The studio is always clean and well-organized, which makes for a great workout environment.”

💗 welcoming to women 3 mentions

“As a woman, trying to join a male dominated sport, I really appreciated the support.”

From the reviews

Perfect start to the day. I took the unlimited membership and I'm checking in 4 times a week now :) The 6AM Rumble class fits perfectly before office and is exactly what I was looking for — just 45 minutes of HIIT and upper body strength work.

★★★★★ — Thasif, Feb 2026

Rumble Boxing is the perfect spot for an intense workout! The energy is incredible, and the team there makes every class feel like a win. Huge shoutout to Jose—he’s one of my favorite instructors and always keeps the motivation high.

★★★★★ — Maria, Nov 2024

I joined Rumble Boxing years ago in Palo Alto, and when I moved to Sunnyvale and found out a new studio had opened, I knew I had to give it a try. Now that I’ve taken plenty of classes, I can confidently say it’s been an amazing experience.

★★★★★ — Ch, May 2026

Took a class today with new trainer, Fernando Colmenares. While I'm new to boxing, I often take exercise classes like Pilates and hot yoga, and can say he's by far one of my favorite trainers I've interacted with. He was very helpful and motivating.

★★★★★ — Mya, May 2026

Excerpts from public Google reviews. Read all 177 reviews →

New to kickboxing? Start at Rumble Boxing

Rumble Boxing 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.

See their beginner class info

Your first kickboxing class at Rumble Boxing

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 Rumble Boxing

241 S Taaffe St Ste 180, Sunnyvale, CA94086

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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.