Gilbertsville's Home for Brazilian Jiu-Jitsu
World-class Gi, No-Gi, judo and self-defense — taught by black belts who care as much about how you leave the mats as how you train on them.
Our Programs
One standard of instruction, built around your goals and experience level. Whether it's your first class or your next belt, there's a place for you on our mats.
Comprehensive Brazilian Jiu-Jitsu with judo and self-defense emphasized throughout. From fundamentals to competition strategy — get in the best shape of your life and learn to defend yourself for real.
Coming soon — Fall 2026. Our kids program is making its return this fall. Age-appropriate training that builds confidence, discipline and resilience — developing character on and off the mats with real, leverage-based self-defense and anti-bullying tools.
Why Sentry Jiu-Jitsu
Our team is built on trust, integrity and family. Members from every walk of life train side by side and support each other on and off the mats. Ego stays at the door.
Learn from a 2nd-degree BJJ black belt and a coaching team with decades of combined experience and active competition history. Technical precision meets real-world detail.
A no-nonsense self-preservation system grafting Brazilian Jiu-Jitsu, Judo and self-defense into techniques that work — immediately useful the moment you step off the mats.
Real Results
Whether you're stepping on the mats for the first time or chasing your next belt, Sentry gives you the coaching, curriculum and community to reach your goals — and become the best version of yourself.
New Student Special
Step on the mats with everything you need to start training — no experience required.
Limited to new students · or call 610.915.8116
What Members Say
Real stories from the people who train at Sentry — adults, parents, competitors and first-timers.
As a police officer, the self-defense techniques I've learned here WORK in the real world. Beginning my martial arts journey with this group has been one of the most rewarding things I've ever done.
Joining the academy was one of the greatest choices I have ever made. I was welcomed in with open arms and given the opportunity to learn and grow while stepping out of my comfort zone.
I was worried being over 50 and starting Jiu-Jitsu. Everyone at Sentry is welcoming and the students work with you to grasp the concepts. Professor Dave breaks down everything from the novice to the experienced.
Verified reviews from our Google profile.
Class Times
Morning and evening training through the week, organized by focus so every level — from day one to competition — has a place on the mats.
Our youth Jiu-Jitsu program is making its return in Fall 2026. Join the interest list and we'll reach out the moment enrollment opens.
Inside the Academy
A clean, welcoming, fully-matted floor in the heart of Gilbertsville — built for serious training and total beginners alike.
Plan Your First Visit
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Room to drill, roll and move on high-quality competition mats.
A friendly, well-kept space where every member feels at home.
Start from zero with coaches who guide you through every step.
Locally run and rooted in the Gilbertsville community.
Come see the mats for yourself — your first class is on us.
Find Us
Come visit the academy, meet the team, and take your first step onto the mats. Whether you're brand new or returning to training, we'll help you get started.
Your First Class Is On Us
Step on the mats, meet the team, and experience your first Jiu-Jitsu class — no pressure, no experience needed.
