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Relentless Fitness & Kickboxing

4.9 ★★★★★ 36 Google reviews · Kickboxing gym in Las Vegas, Nevada

Kickboxing gym 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

  • 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
  • Today see hours ·
  • Website & schedule fightrelentless.com — book classes and see the live schedule
  • Phone (702) 777-1245

Hours

Monday 4:45–6:30 AM, 5:30–6:45 PM
Tuesday 4:45–7:30 AM, 5:30–6:45 PM
Wednesday 4:45–6:30 AM, 5:30–6:45 PM
Thursday 4:45–7:30 AM, 5:30–6:45 PM
Friday 9:15–10:30 AM
Saturday 7:30–9:30 AM
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 Relentless Fitness & Kickboxing, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🔥 Cardio Kickboxing 9 mentions

“If you're looking for a great workout and a beautiful community of people to uplift your energies, you need to check out Relentless!”

All gyms that run cardio kickboxing →

💪 Women's Kickboxing

“I also enjoy the fact that weights are incorporated in certain workouts , which as a woman it’s important to build and maintain as we age.”

All gyms that run women's kickboxing →

🥊 Boxing 2 mentions

All gyms that run boxing →

Kickboxing Bootcamp 3 mentions

“The workouts are a variety of kickboxing, HIIT, strength training, cardio, boot camp style exercises and so much more.”

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 Relentless Fitness & Kickboxing — mined from their reviews and the gym's own info.

🥊 Boxing 2 mentions

Other gyms that also teach boxing →

🥋 Brazilian Jiu-Jitsu

“A friend told me about the kickboxing class at Relentless Fitness located inside Fight For Us Jiujitsu gym.”

Other gyms that also teach brazilian jiu-jitsu →

🛡️ Self-Defense

“And also, you absolutely learn self defense moves that could potentially be used outside of class in a real life threat.”

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 36 Google reviews — in their own words.

🧑‍🏫 expert, motivating coaching 2 mentions

“7 months committed to this fitness journey and counting and I have Coach Sarah to thank ♥️ She pushes you and helps you through class with form and power!”

🌱 welcoming to beginners 5 mentions

“I can honestly say that I was hesitant walking into Relentless the first time but was greeted by Dani with positivity and excitement.”

🎉 fun, high-energy classes 6 mentions

“If you're looking for a great workout and a beautiful community of people to uplift your energies, you need to check out Relentless!”

💦 killer cardio workout 5 mentions

“If you're looking for a great workout and a beautiful community of people to uplift your energies, you need to check out Relentless!”

⚖️ great for weight loss 2 mentions

“I lost 20lbs and maybe more; I am toned, I am stronger… I can go on.”

💗 welcoming to women 5 mentions

“It’s these moments that others will give me the motivation that I need by saying positive things or giving me suggestions to get through the workout.”

From the reviews

Relentless Fitness is one of a kind. Every work day is different. Sarah takes her time to teach us the proper form and always makes us sweat! You want something that will elevate your lifestyle then see Sarah! You won’t regret it. The only thing you’ll regret is not going sooner!

★★★★★ — Stephanie, Aug 2023

I decided to become part of the Relentless family a little over a month ago and I can honestly say that it has been one of my best decisions. Being part of Relentless guarantees you dedicated coaches, workouts that are fun and push your limits, and friends that motivate you throughout your workout.

★★★★★ — Tiffany, Aug 2024

A friend told me about the kickboxing class at Relentless Fitness located inside Fight For Us Jiujitsu gym. Initially, I was intimidated by the idea because I didn’t have any boxing experience and thought the workouts would be too difficult, but Sarah (Coach/Owner) has made my overall experience so enjoyable and…

★★★★★ — Mymy, Aug 2023

Like many others, I was eager to get back to a gym after COVID knocked us all for a loop. The gym I was going to wasn't the same any longer, so I tried a new place where many of my gym friends migrated to. I was there for a while but it just didn't feel like "home" to me...

★★★★★ — Lisa, May 2024

Excerpts from public Google reviews. Read all 36 reviews →

Your first kickboxing class at Relentless Fitness & Kickboxing

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 Relentless Fitness & Kickboxing

7135 W Ann Rd #140, Las Vegas, NV89130

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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.