There is no such thing as a typical open mat

The first answer was almost unanimous.

It wasn't the number of black belts. It wasn't how hard people rolled. It wasn't even how big the room was.

It was the people.

That was the answer I kept hearing on a Saturday morning at Carbon SG in Fort Lauderdale, camera in hand, asking people between rounds a simple question: what makes a good open mat?

But before we asked the room, we wanted to know what the numbers said. So we counted them.

There are currently 1,713 recurring open mats across 981 gyms in the Open Mat Locator directory. And the one everybody pictures is real. It just isn't the whole story.

The stereotype holds up. Mostly. Only 10 open mats in the entire directory charge anything at all, and the fee tops out at $35.

But there isn't really one average open mat. There are two.

There's the weekend open mat: late morning, social, usually the biggest room of the week. And there's the weekday open mat: 6, 7 or 8 p.m., after work, when people need somewhere else to train. The two barely touch. The middle of the afternoon, when neither group is free, is almost empty.

The numbers split the week almost perfectly: 868 open mats run Saturday or Sunday, and 845 run Monday through Friday. The difference isn't how many there are. It's when they happen.

And then there's Friday.

Friday tells the story. Of its 366 open mats, 198 start between 6 and 8:59 p.m. Only 67 fall in the late-morning window. At 5 p.m., Friday has 44 open mats, while no other day has more than eight.

That makes Friday less of a weekend day than it looks. It's the bridge between the two open-mat worlds, and most of its traffic comes after work.

There are stranger schedules, too. The earliest recurring open mat in the directory starts at 4:45 a.m. on a Friday in San Marcos, California, at a gym that opens its doors at 4:40 for it. The latest starts at 10 p.m.

So Saturday at 10 a.m. is real. It just isn't the whole sport. There are 868 open mats in the weekend half, and another 845 during the work week, at gyms that never come up in a conversation about Saturday.

But the data can only tell us when people show up. It can't tell us why they keep coming back. For that, we had to ask the people on the mats.

The room matters more than the rounds

The first answer came down to energy.

That was Carbon's head coach, and his theme came up again and again.

Another answer boiled it down even further: being around people you actually like.

The practical answers were revealing in their own way. People want enough training partners their size. They want different skill levels. They want different styles. They want enough people that they can find the type of round they're looking for.

And that doesn't mean everyone wants the same thing. One person described wanting a room full of people who want hard, competitive rounds. Another wanted a more relaxed environment. Those aren't contradictory. A good open mat has room for both.

The common denominator is that nobody wants to feel like they're walking into a room full of egos. "People not trying to injure you, going at their own pace, trying to get better." Another person put it even more simply: "an open mat that has people with no egos is probably going to be the best."

Then someone brought up the most important variable of all. The aux.

Maybe she was joking. Maybe she wasn't. Either way, the playlist came up enough times that we started to wonder if the music actually matters.

It probably does.

Then we asked the people who are always visiting gyms

Carbon gave us one answer. But one room is one room. We wanted to know whether the same things mattered to the people who spend their lives dropping into unfamiliar gyms.

So we asked a group of BJJ creators, most of them from our creators directory, to name the best open mat they'd ever been to.

Nobody named the biggest room they'd been in.

Creator

Josh Beam

Purple belt·Snap Lab, San Jose

@joshbeambjj

What's the best open mat you've ever been to?

MKTeam in Paris, before the IBJJF Euros. People from all over the world of all different levels traveled there to compete. That was the pinnacle of what an open mat is supposed to be.

The room he means is MKTeam, in the 20th arrondissement of Paris, where the week before Euros the mats fill with competitors from everywhere.

Creator

Carsahh

Purple belt·Mat Chess MMA, Seattle

@carsahh

So I'm down here at Guardian Peru, a social project in a small town in Mancora. What makes this one so unique is, it's an open air gym, surrounded by palm trees, and a huge mat space. Your typical rounds will be with upcoming teens in the program who are surprising REALLY good. You'll also come across travelers as people from all over the world come down to support. Afterwards you go get a coconut and hangout at the beach until the next open mat. Vibes bro, you can't beat it.

Guardian Peru is a free program for kids in Máncora who would not otherwise get near a mat. The teenagers who beat up visiting purple belts are the point of it.

Creator

Jiujitsu Johnny

Brown belt·Roufusport, Sheboygan, Wisconsin

@huntjitsu91

Primal MKE, in Milwaukee. 3 times a year during 4th of July, Thanksgiving and Christmas they host a week of open mats, which is great to break up the monotony of daily training. And doing this during the holidays is a great way to encourage people to get on the mat when they are back in town visiting family and have extra time off work. They also host a monthly open mat where you can not only do jiujitsu but MMA as well. They also do a cookout with beers, drinks and if you're feeling crazy they break out the smelling salts. After training you can jump in the cold plunge and of course they have multiple showers. Another added bonus is the bidet in the locker room. If you know you know.

That's Primal MKE, in Milwaukee. And note the timing: the week everyone is home visiting family is the week everyone has a free morning and nobody has their own gym nearby.

Adam Forster chose Nexus in Alicante, Spain, an ECJJA event that pulled in gyms from across Europe. Randy William picked Gracie Gulf Coast, where he teaches. Kenny Wilson of BJJ Balance picked the open mats before PGF comp nights, "the best in the world," at an undisclosed studio in Vegas. Isaiah Young picked 10th Planet Lombard the day after Midwest Finishers, when the room was still full of people who had all just competed.

Then kev answered, and his was the smallest room anybody named.

Five people. A 15-by-15 mat in the back of a muay thai gym in Santa Rosa. One of them had started jiu-jitsu that week. He was in his fifties and had never played a sport in his life.

He was there anyway, rolling with everyone else.

Creator

kev

Blue belt·Sonoma Valley Jiu Jitsu, Sonoma, California

@rollwithmekmg

Combat Therapy in Santa Rosa CA was one of the first gyms i visited outside of my home gym. it was held in the back of a muay thai gym with maybe five people on a 15x15 mat.

there was a man in his 50s there, he had just started jiu jitsu that week, and it was the first time in his life that he tried a sport. i think that said a lot about the environment coach Marcello Cassero created. someone older with no athletic background could join and feel welcomed, while at the same time Marcello's MMA background and jiu jitsu made it a room where you could get some really tough rounds in.

A mat smaller than a bedroom, in the back of somebody else's gym, and Combat Therapy beat every room with two hundred people in it.

Kat.Hleen was the only one who didn't have to travel anywhere. She picked Peerless in Corona, California, where she trains, and where Stephen Martinez runs one of the biggest no-gi open mats in the area on a Sunday morning. People drive in from all over. That isn't what she wanted to talk about.

She wanted to talk about the fact that it's competitive without the egos.

There's a catch to being the person filming all of this. These creators get recognized at the open mats they visit. So we asked what happens when the person you're rolling with already knows your name, your channel, or your highlights.

So what happens when everyone knows who you are?

For some creators, it means people want to ask questions. For others, it means everyone wants a round. And sometimes, it means people want to find out whether the person they've been watching online can actually roll.

Josh Beam described people wanting to test him, "to see if the YouTube guy is actually good at BJJ," especially when a camera is around.

Creator

Adam Forster

Brown belt·40 Licks Jiu Jitsu Club, Kent, England

@adamforsterbjj

What actually happens when people know who you are?

Usually they'll roll pretty hard with the intent of trying to get a highlight or flashy submission on me. Feels like having a target on your back but it's an open mat at the end of the day, I'm there to get some rolls in and have fun.

Creator

Kenny Wilson

BJJ Balance·Purple belt, Dedicated Jiu Jitsu, Temecula

@KennyDoesBJJ

They wanna roll. I'm a purple belt, so every blue belt wants to beat me, every purple belt wants highlight footage and the upper belts are all pretty chill because there is no glory in beating up a purple belt influencer.

Creator

Randy William

Black belt·Gracie Gulf Coast, Biloxi, Mississippi

@black_belt_randy

They want to roll, or they ask me questions. Oftentimes a combination of both. I'm a big fan of entertaining my group.

Creator

Kat.Hleen

The open mat DJ·Peerless

@kat.hleen__

Lately, people have been recognizing me as the 'open mat DJ' lol. I've been getting the opportunity to visit different gyms and DJ their open mats, and the love I get from the BJJ community has been crazy. People recognize me, come up and show love, and I can definitely feel the energy when I'm playing.

This is what that looks like:

Not everyone gets the target treatment. Isaiah Young said it happens rarely, and when it does it arrives sideways: people tell him they've met him before when they haven't, and "they've probably just seen my videos lol." Jiujitsu Johnny's version is the most deflating of the lot. "Most ppl just say 'hey I like your videos,' I say thank you, we roll and that's pretty much it haha."

And kev, who walks into more unfamiliar gyms than almost anyone we asked, gets something different again.

it's very uplifting when someone tells me that they appreciate my content, or that they were inspired to visit another gym. that's probably the coolest part for me, watching communities connect.

kev@rollwithmekmg

It's another reminder that open mats have become something bigger than extra training. They're social spaces. They're networking spaces. They're places where people from different gyms can meet without needing to compete against each other first.

And occasionally, they're karaoke venues.

Which raises the other question. Everyone we asked agrees on what makes an open mat good. What ruins one?

The best open mat stories aren't always the best behaved ones

We asked the creators about the craziest things they've seen. The answers were a pretty good argument for why the "no ego" rule matters, and one of them is a pretty good argument for why the waiver matters too.

Creator

Jiujitsu Johnny

Brown belt·Roufusport, Sheboygan, Wisconsin

@huntjitsu91

What's the craziest thing you've seen happen at an open mat?

Had a group of 4-5 people come into the gym I train at a few years ago. No real training but they 'trained a bit in the garage.' All but 2 were 'just there to watch.' Of course these people get on the mat and start messing around. No waiver signed btw as they were 'just going to watch.'

One of the guys snaps his arm right in half messing around with his buddies. We ended up having to end the open mat. Guy said he didn't want any ambulances or anything and we ended up carrying him out of the gym, a second floor gym, on a long couch cushion we used as a gurney as he couldn't walk. The guy actually was very apologetic and nothing ever came of it. But because the waiver was never signed it could've ended very badly.

The people who broke that open mat were not competitive and they were not egotistical. They were untrained, unsupervised and unaccounted for, which is a failure mode most gyms never think about until it happens once.

One creator recalled a purple belt trying to steal his training partner between rounds and threatening to tell the gym owner when he refused. Another had seen people take open mat so seriously that it turned into injuries. There were fights after rounds got too heated. And there was the rare good kind of crazy, from Kenny Wilson: watching Roger Gracie at a PGF open mat "submit someone with pressure from inside their closed guard."

kev watched a visitor melt down and square up in a room that was not his, which he described as giving off a "dojo storm" vibe. His read on it is the cleanest statement of the whole problem anybody gave us. Some gyms have higher level athletes than others, he said, and that isn't the point. "you don't see professional athletes in other sports showing up to local leagues to prove how much better they are."

jiu jitsu is a combat sport, but intensity and ego aren't the same thing, bring that dog out in competition.

kev@rollwithmekmg

And then there was the gym that apparently had enough of normal open mat etiquette and decided that anyone sitting out at Orient Jiu Jitsu in Las Vegas had to do karaoke. A microphone replaced the normal music.

"Real innovation."

It's hard to argue.

But underneath the funny stories is a consistent message: an open mat can get weird very quickly when people forget what it's actually for. It's not a tournament. Nobody needs to prove they're the toughest person in the room. You're there to train.

And then, ideally, come back next week.

The people who run the gyms answered too

The people on the mats told us what they want from an open mat. The people paying the rent have their own version of the story. Why does a gym open its doors, for free, to strangers from rival schools?

Five owners and coaches answered, and between them they cover the entire personality range of the job.

Anthony runs Triangle Jiu Jitsu in Durham, North Carolina, and an open mat he calls The Sunday Service. Why host a free one? "Uplift and unite our community." The best thing that ever happened at it: "Free star seminars and raffle giveaways." A visitor's best move is to "have a positive attitude." The quiet uninvite is earned by "inappropriate behavior."

Edward Petrossov runs Komba in Sunrise, up the road from Carbon, and he skipped the philosophy entirely. His answers are the practical ones. A visitor's best move: being "a good training partner, good hygiene, respectful to everyone." The uninvite: "being an ass and trying to hurt guys smaller, weaker or less experienced." The best thing that ever happened at his open mat: "just lots of good people." The playlist: "some Brazilian Funk."

Dillon Quitugua runs Tribe Collective on Oahu, and his answer is the one that treats the question as a serious one. Why host a free open mat? "We approach our open mats with a mindset of community first, jiu jitsu second. We believe in the power of pilina or connection. The more we connect the happier and healthier we become. The jiu jitsu is the vehicle that gets us to pilina." The best thing that has ever happened at his open mat is not a roll. "We pray and share gratitude as a whole group." A visitor gets removed for "dangerous intent or negligence," and the song is "Waiting in Vain" by Bob Marley.

Tribe Collective has no building. They run roving open mats at rotating spots across Oahu, and this is what one looks like:

Ares BJJ Phoenix gave the most practical reason of anyone for keeping the doors open, and it is about their own students rather than about visitors. "I host an open mat for my students to get experience from different styles of Jiu Jitsu. I am merely one perspective. Even if I teach a move one way, someone might have a different way of doing the same move." The best thing a visitor can do is "have fun. This isn't worlds." The fastest way to get banned is "blatant attempts to hurt people. Slams, ripping subs, hurting people on purpose."

They also gave the single best answer anyone has given us to what's the best thing that's ever happened at your open mat.

Their answer on promotion was just as honest, and every gym owner reading this will recognize it: "Sometimes I post it on a local open mat FB group. Otherwise it's been awhile since I've advertised it. Good reminder lol."

Then there is Martin Corvetto, one of the head coaches at Carbon SG, the room in the video above, who answered like a man whose open mat speaks for itself. Why does Carbon host free open mats? "We are goated." The best thing that has ever happened at his open mat? "Me showing up."

How does he promote it? He named my channel. I shot the video at the top of this article, so I'll allow it.

He was sincere for exactly one answer, that a visitor should "introduce themselves to the coaches, and generally be respectful while visiting the business," and then listed what gets someone quietly not invited back: "Skin infections, being rude, or named josh."

My name is Josh. I am choosing to believe that one is a joke.

By now one thing was becoming clear: there isn't one way to build a good open mat. But if there's a single idea from all of these conversations that more gyms could steal, it's this one.

One idea worth stealing

kev has a problem with the way open mats are scheduled, and it comes from doing more of them than anybody else we asked.

His record is four in a single day. He aims for two a week, minimum, on top of a full-time job and however far behind he is on editing. So when we asked everyone for their ideal open mat day and time, and Jiujitsu Johnny said "Saturday is goated from 10-noon" and Isaiah Young said "Saturday and 10 to 12," kev was the one person who didn't want an answer at all. A country where every gym picks Saturday at 10 a.m. is a country he can only visit one page of at a time.

What he wants instead:

i think it would be cool if more gyms held monthly events, coordinated so they don't overlap, and openly invited other gyms in the area. imagine one of the largest gyms showing up to support one of the smallest in the area.

kev@rollwithmekmg

It already works where somebody bothers. 10th Planet Sacramento runs a Twenty Round Tuesday on the first Tuesday of every month. Primal MKE gives up a whole week three times a year. Neither one competes with Saturday morning. They just sit in the gaps around it.

The unspoken rules

Whether you're walking into the biggest open mat in town or five people on a 15-by-15 mat, the same basic rules follow you in. Every gym says visitors are welcome. Every gym also has an unwritten set of rules that nobody explains.

Check the listing before you show up. Is it gi or no-gi? Are visitors actually welcome? If you're not sure, message the gym.

When you arrive, introduce yourself. Your rank, your gym, how long you've trained. Nobody wants your competition record.

During rounds, match your partner's pace. If someone says they're done, they're done.

Don't walk around the gym barefoot.

Don't turn every round into a competition.

And don't be the person everyone remembers for the wrong reason.

The best open mats aren't necessarily the ones with the most medals, the most black belts, or the biggest mat space. They're the ones where people want to come back.

So, what actually makes a good open mat?

After looking at 1,713 open mats, talking to the people at Carbon SG, asking creators who visit gyms around the world, and hearing from the people who run the gyms, the answer is surprisingly simple.

Good people. Good rounds. A room with enough variety that everyone can find someone to train with. Hard training without unnecessary egos.

And a little bit of personality. Maybe that's music. Maybe it's karaoke. Maybe it's a DJ. Maybe it's everyone hanging around after the last round instead of immediately heading for the door.

Because there is no such thing as a typical open mat. There are 4:45 a.m. ones and 10 p.m. ones, two-hundred-person rooms and five-person rooms, DJs and karaoke machines and a coach in Arizona holding a door open so the room could keep rolling through a blackout.

The data tells us when America rolls. But the people on the mats tell us why they keep showing up.

There's probably one near you this week, and going by the numbers above, it might not be on Saturday. Browse every open mat on the map, or start from the state directories: California leads with 262 recurring open mats, Florida holds 157, and Texas 146. The Saturday session from the video runs weekly and takes visitors:

By the numbers

• 1,713 recurring open mats in the Open Mat Locator directory
• 981 gyms represented
• 868 run Saturday or Sunday; 845 run Monday through Friday
• 551 Saturday open mats, the biggest single day
• 805 start between 10 a.m. and 12:59 p.m.; 492 start between 6 and 8:59 p.m.
• 80% of that mid-morning block is Saturday or Sunday; 1% of the evening block is Saturday
• 99.4% are free
• 90 minutes is the most common duration
• 11 a.m. is the most common start time overall; 10 a.m. is the most common on Saturday

Counts are a snapshot of the Open Mat Locator directory taken August 14, 2026, so they describe the directory, not every open mat in America. The two most extreme start times were checked against the gyms' own published schedules before printing; one aggregator-imported listing had the wrong day and was corrected in the directory and in these counts. Video quotes are lightly trimmed for length. Creator and gym owner quotes come from a written questionnaire answered August 12 and 13, 2026; Ares BJJ Phoenix answered by email. I shot the cover photo and the video at the top, filming as Everyday 24 Seven. The Carbon SG mat photo is the gym's own.