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Uncharted Jiu-Jitsu
4.8 ★★★★★ 52 Google reviews · BJJ gym in Corona, California
Plan your first class
- Beginner-friendly all levels welcome, including total beginners — you don't need to be fit or have any experience to start
- Kids & youth classes kids and youth BJJ classes — built around discipline, focus, and confidence
- No-gi no-gi grappling classes — training in a rashguard and shorts, with faster scrambles and a natural bridge to MMA
- Today see hours ·
- Website & schedule unchartedjiujitsu.com — book classes and see the live schedule
- Phone (951) 444-8358
Hours
| Monday | 6–7:30 AM, 9–10:30 AM, 3:30–8:30 PM |
| Tuesday | 6–7:30 AM, 9–10:30 AM, 3:30–7:30 PM |
| Wednesday | 6–7:30 AM, 9–10:30 AM, 3:30–8:30 PM |
| Thursday | 6–7:30 AM, 9–10:30 AM, 3:30–8:30 PM |
| Friday | 6–7:30 AM, 9–10:30 AM, 3:30–7:30 PM |
| Saturday | 9:15 AM–12:30 PM |
| Sunday | Closed |
The classes they run
“When I came to roll I showed up to a fundamentals class, (all white belts) I am a blue belt.”
“My 12 year old son learns with me on the weekends as well and he loves going and It is a great learning grounds not just for adults but for kids and teens as well.”
“My 12 year old son learns with me on the weekends as well and he loves going and It is a great learning grounds not just for adults but for kids and teens as well.”
What members say
“Spencer is a great professor, and teaches a thorough period of instruction and provides great feedback during drilling.”
“Excellent facility, Very friendly and welcoming atmosphere, and most importantly high quality jiu jitsu.”
“I’m a first degree black belt and was in need of somewhere to train for a week while visiting family here.”
“When I came to roll I showed up to a fundamentals class, (all white belts) I am a blue belt.”
“My daughter attended to kids classes, and Spencer is great with kids!”
“Place is clean and roomy, class sizes are not too big and there's numerous coaches so kids get individual help.”
From the reviews
It's a pleasure to recommend Sektor Corona to you. My boys, ages 11 & 10, have been with Sektor almost one year now. I've had the pleasure of working with Coach Andrew over the past year and I can confidently say that he is an outstanding coach.
To start off, I live in Texas and was down for the holidays visiting family. It had been a few days since I have gotten in a roll and need to get one in. I looked up local gyms in the area and came across Sektorbjj. When I came to roll I showed up to a fundamentals class, (all white belts) I am a blue belt.
I’ve had my two boys enrolled at Sektor Corona for about a year now, and I must say, it's been a good experience. Coach Andrew's dedication to ensuring kids learn techniques correctly is commendable. From day one, it was evident that Coach Andrew genuinely cares about each student's progress.
My kids just started at Sektor Jiu Jitsu in Corona and we’re loving it so far. The atmosphere is super positive. Alba at the front desk is so friendly, helpful, and knowledgeable. She’s made everything easy and made us feel right at home. I love that there’s another Mom there to help the kids.
New to BJJ? Start at Uncharted Jiu-Jitsu
Uncharted Jiu-Jitsu comes up as a beginner-friendly gym — noted on their own site. If you've never rolled or set foot on a mat, that's exactly who a good beginners program is for. A few things worth knowing before your first week. First, you don't need to be fit or flexible to start — you get in shape by training, not before it, and coaches scale the intensity to you. Second, you won't be thrown into hard rolling — reputable gyms build fundamentals (positions, escapes, and basic submissions) for weeks, live rolling eases in gradually, and tapping early keeps every roll safe. Third, all 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, and leave your ego at the door. Most gyms are happy to let you watch or try a class first, so reach out before you commit.
Your first BJJ class at Uncharted Jiu-Jitsu
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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