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Relentless MMA & Fitness
5 ★★★★★ 68 Google reviews · Muay thai gym in Fairfax, Virginia
Plan your first class
- Kids & youth classes kids and youth muay thai classes — built around discipline, focus, and confidence
- Private lessons private, one-on-one coaching available — a focused way to start or to work around a busy schedule; ask about availability and rates
- Fitness & conditioning muay thai fitness and cardio classes — a serious workout you can do without ever having to spar
- Fight team a competition team for members who want to test themselves as amateur fighters
- Today see hours ·
- Website & schedule relentlessmmaandfitness.com — book classes and see the live schedule
- Phone +1 540-999-8270
Hours
| Monday | 5:30 am–11 pm |
| Tuesday | 5:30 am–11 pm |
| Wednesday | 9 am–5 pm |
| Thursday | 9 am–5 pm |
| Friday | 5:30 am–11:30 pm |
| Saturday | 5:30 am–10 pm |
| Sunday | 6 am–8 pm |
The classes they run
“I schedule a personal training session with Coach David Carter weekly in Arlington, VA and drive to Relentless MMA in Chantilly, VA when able.”
“If you are looking to get stronger, faster, get in shape, gain excellent knowledge in real life combat situations and MMA your going to love it here!”
“If you are looking to learn self defense, compete, or stay fit David Carter will get you there.”
“I am still amazed that after all these years he still has a wealth of new combat sport and self defense knowledge to share.”
Other martial arts here
“For about 8 years I have trained with Coach Carter in Muay Thai, Kickboxing, Boxing, Savate, Jeet-Kun Do, Combat Submission Wrestling, and self-defense.”
“I attend at least 3 MuayThai, MMA Boxing, Boxing and self defense classes every week.”
“He’s deeply passionate about martial arts and highly skilled in multiple disciplines, including Muay Thai, Karate, Kali, and Jiu-Jitsu.”
“Dave Carter at Relentless MMA is hands down ( I know coach keep my hands up ) the best coach I have had in my 20 year sports career; soccer, lacrosse.”
“He’s deeply passionate about martial arts and highly skilled in multiple disciplines, including Muay Thai, Karate, Kali, and Jiu-Jitsu.”
“For about 8 years I have trained with Coach Carter in Muay Thai, Kickboxing, Boxing, Savate, Jeet-Kun Do, Combat Submission Wrestling, and self-defense.”
What members say
“Fantastic gym and fantastic coach. What makes David Carter a great coach is his love of MMA, in-depth knowledge and great coaching/communication skills.”
“As soon as I walked in the door Dave was kind and welcoming and put my nerves at ease.”
“As soon as I walked in the door Dave was kind and welcoming and put my nerves at ease.”
“I learn new techniques every class and continue to work on perfecting techniques from previous classes- all while getting a great workout.”
“Been going here for almost 1 year and I've gone from knowing nothing and out of shape to be in the best shape I've ever been and knowing the secrets of Muay Thai!”
“No matter what shape you are in, from getting started on your fitness journey to competition-grade martial arts, you need to go where the best training is.”
From the reviews
Can't say enough good things about Relentless MMA & Fitness. Coach Dave is the best instructor I've ever had (and I've had A LOT). It took me 40 years to finally find a place and instructor who makes me actually want to come to class and smile while I'm there!
Where do I start. Dave Carter at Relentless MMA is hands down ( I know coach keep my hands up ) the best coach I have had in my 20 year sports career; soccer, lacrosse. I was a bit nervous going into the gym, not knowing what to expect.
I have always hated going to the gym to work out, but training Muay Thai at Relentless has been an wake up experience for me. I have no major intentions of fighting matches, but cutting weight and building some muscle tone ARE my goals. Learning to effectively defend myself form harm is just a big plus.
I find it hard to express in words how great this gym is. Coach Carter is very knowledgeable and explains new techniques in a ways that are easy to understand. His knowledge extends past the violence. He has helped me with diet plans and he has personally helped me rehab my knee after surgery.
Your first muay thai class at Relentless MMA & Fitness
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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