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Duncan Martial Arts
4.9 ★★★★★ 68 Google reviews · BJJ gym in Union, New Jersey
Affiliated academy — reviews and the gym's own info point to a recognized BJJ lineage or affiliation (think Gracie Barra, 10th Planet, Renzo Gracie, Alliance, Atos or Checkmat). If lineage matters to you, ask which affiliation the academy belongs to and under whom the head instructor earned their black belt.
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
- Kids & youth classes kids and youth BJJ 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
- Today see hours ·
- Website & schedule duncanmartialarts.com — book classes and see the live schedule
- Phone +1 908-349-8619
Hours
| Monday | 4–10 pm |
| Tuesday | 4–10 pm |
| Wednesday | 4–10 pm |
| Thursday | 4–10 pm |
| Friday | 4–10 pm |
| Saturday | 9 am–2 pm |
| Sunday | Closed |
The classes they run
“The weapons training and situation based training will prepare you or your children for the types of things that happen when you can’t run away.”
“Wether child, teen, or adult, everyone can grow and develop.”
“I travel at least 45 minutes to attend both private sessions and the adult program.”
“Not only is the self defense taught there complete in ever combative aspect but also taught in such a way that is practical to students of all ages and athletic ability.”
Other martial arts here
“I would definitely recommend Duncan Martial Arts for any parent looking for their child or children to learn karate and discipline.”
What members say
“Hanshi Duncan's team of Black Belt instructors further enhances the learning experience, providing skilled, patient, and dedicated guidance to every student.”
“Very welcoming, patient and willing to help beginners so they can become advanced.”
“If you want excellent knowledge, No nonsense, Just straight forward, Duncan Martial Arts is the place to go.”
“Techniques that are modernized that are meant to really protect you from an assault and with the skills that will make sure you survive.”
“Hanshi has the deep understanding, passion and proficiency in the martial arts which comes from years of mastery and lineage.”
“I would definitely recommend Duncan Martial Arts for any parent looking for their child or children to learn karate and discipline.”
From the reviews
Started my son when he was 3 years old. He's now 4. I love the fact that he's learning new skills and discipline. Sensei (Mr. Duncan) is patient and very knowing. I love the fact that he expects his students to try their hardest. I've seen a lot of growth in my son in these few short months.
I am very fortunate to be studying at Duncan Martial Arts under Hanshi Gregory Duncan. Hanshi Gregory Duncan is the embodiment of a highly skilled and advanced martial artist and instructor. He is excellent at transmitting his expertise and building positive character.
So grateful to be part of the Duncan Martial Arts Family. Hanshi Duncan is an amazing teacher/mentor. I have been part of the school for over 10 years and couldn't see myself anywhere else. For anyone who wants to start self defense training and thinks they might be too old, they should come here (I know!!).
Never in my life have I felt such a sense of belonging and unity than at Duncan Martial Arts. Not only is the self defense taught there complete in ever combative aspect but also taught in such a way that is practical to students of all ages and athletic ability.
Your first BJJ class at Duncan Martial Arts
Nervous about walking into a BJJ 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 basic positions and escapes with a partner — not hard sparring. Rest whenever you need to; no one will bat an eye. What to wear: athletic wear you can move in (or a gi if you have one); you'll train barefoot on the mats. What to bring: water and a mouthguard if you have one — many gyms lend a loaner gi for a first class, so it's worth asking when you call. As you keep training you'll add your own gi (or a rashguard and shorts for no-gi) and a mouthguard. Live rolling eases in gradually, 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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