← All articles

October 8, 2026 · 9 min read

Brazilian Jiu-Jitsu in Longmont: A Straight Guide for Adults Starting Out

The page I would want to read before starting. What the sport is, what a week looks like, what it costs, and what happens on day one.

The mat at G13 Brazilian Jiu-Jitsu Colorado in Longmont

If you have been circling the idea of training jiu-jitsu for a few months, this is the page I would want you to read first. It covers what the sport actually is, what a week of training looks like here in Longmont, what it costs, and what happens the first time you walk through the door.

There is no trick ending. If you read this and decide a different gym across town fits your schedule better, that is a fine outcome. Longmont is better off with more people training than with all of them training in one building.

What Brazilian jiu-jitsu actually is

Jiu-jitsu is grappling. There is no striking in it at all. Two people start standing or on their knees, and the goal is to control the other person and finish with a joint lock or a choke. The person on the receiving end ends it at any moment by tapping, and everybody stops.

That tap is the entire safety mechanism of the sport, and it is the reason this is one of the few combat arts where people train hard into their fifties and sixties. You get to go full speed against someone who is genuinely resisting, which is rare, and nobody takes a shot to the head doing it.

The practical consequence is that there is no untested theory. You find out in your first month whether something works on a person who does not want it to work. Most people describe the feeling as closer to chess with your whole body than to a workout class.

Why adults around here end up sticking with it

The honest reason is that it is a skill, not a fitness program. A fitness program needs you to be motivated. A skill pulls you back because you want to solve the thing that beat you on Tuesday.

  • It is a problem, not a routine. You leave with something specific to think about, which is why people who hate the gym keep showing up here.
  • The conditioning arrives without being the point. Nobody on the mat is counting calories out loud. The shape happens anyway, usually around month three.
  • It holds up under pressure. Controlling distance, getting back to your feet, and staying calm when someone has a hold of you are the parts of self-defense that actually transfer.
  • The room is the draw. Training with the same people four times a week builds a kind of friendship that is hard to find at thirty-five, when nobody is introducing you to anybody new.

What a week of training looks like

We run six days a week. There is an all levels class every weekday at noon, which exists for the people who would rather train on a lunch break than lose an evening with their family. Kids and youth classes run in the late afternoon, then the evening block is fundamentals or all levels, followed by advanced, followed by open mat.

Saturday morning is the easiest entry point if you work regular hours. It opens with Fundamentals at 10:00, which is the class built for people who have never trained, and a review class after it.

The full grid lives on the schedule section of the home page, and booking is open from there. I am deliberately not reprinting it here, because a schedule copied into four places is a schedule that is wrong in three of them.

What to wear, and what it costs to start

Your first class costs nothing. One full hour, no card, no contract. Wear a t-shirt and shorts or leggings, with no zippers and no pockets, because fingers and toes catch in them. That is the whole list.

After that you will want a gi, which is the heavy cotton uniform. Our one-time registration covers your first official G13 uniform and rashguard, so you are not shopping for gear before you know whether you like the sport.

Monthly membership here runs $159 for adults and $125 for kids, and a family plan covers the first two members for $249 with $99 for each additional member. Those are founder rates, held for the first fifty members, and they do not increase afterwards for anyone who holds one.

The floor under the mats, which almost nobody asks about

Most gyms roll mats directly onto a concrete slab. It is cheaper and you cannot see the difference from the door. You feel it the first time somebody takes you down.

Our mats sit on a Fuji Superblock subfloor: foam blocks under two layers of board, so the floor absorbs the impact of a throw instead of your spine doing it. It is the kind of detail that decides whether you are still training in ten years or whether your back quietly ended it in year three. Ask about it wherever you end up training, not just here.

Where we are, and the drive

We are at Unit C5, 13790 E. I-25 Frontage Rd, Longmont, CO 80504, in the Lyons 66 Commercial Center, right on the I-25 frontage road a few minutes east of downtown Longmont. The parking is free and it is directly outside the door.

The practical reason that matters: the single most common cause of quitting is not losing interest, it is a sixty minute round trip four nights a week until it stops being worth it. If you live in Longmont, Mead, Firestone, Frederick, Dacono, Erie or Berthoud, the drive here is short enough that it never becomes the reason you stopped.

How to actually start

Book the free class, show up in a t-shirt, and either train or sit on the side and watch the whole hour. Both are normal. Pick a class time here.

Common questions

Do I need to be in shape before I start jiu-jitsu?

No. The first month is where you get in shape, and every class has people at every level of fitness. Going at your own pace is expected, not tolerated.

Is jiu-jitsu safe for adults over 40?

It is one of the safest combat sports, because there is no striking and because tapping ends any position immediately. A large share of the adult class is over 35.

How much does jiu-jitsu cost in Longmont?

At G13 Colorado, adult membership is $159 per month, kids are $125, and a family plan is $249 for the first two members plus $99 for each additional member. The first class is free.

What should I wear to my first class?

A t-shirt and shorts or leggings with no zippers and no pockets. You do not need a uniform for the first class.

Where is G13 Brazilian Jiu-Jitsu Colorado?

Unit C5, 13790 E. I-25 Frontage Rd, Longmont, CO 80504, in the Lyons 66 Commercial Center, on the I-25 frontage road a few minutes east of downtown Longmont.

Your first class is free

One full hour, no card and no contract. Train or sit on the side and watch, then decide. We are on the I-25 frontage road in Longmont, open six days a week.

Book a free classSaturdays at 10 AM, and other times during the week

Keep reading