Free intro class · Longmont, CO · right off I-25
Try one class.Then decide.
An hour on the mat at the first G13 Brazilian Jiu-Jitsu academy in Colorado. No card, no contract, no one following you to the parking lot. Come see if it is for you, then take your time.
How it works
Three steps, and none of them cost anything.
Pick a time
Choose a class from the list below. It takes about thirty seconds and we never ask for a card.
Show up in a t-shirt
T-shirt and shorts or leggings, nothing with zippers or pockets. We have everything else. Arrive fifteen minutes early.
Train, or just watch
Step on and try it, or sit on the side and see a full class first. Both are completely normal here.
What is under the mats
Most gyms roll mats onto concrete. We built a floor first.
G13 Colorado sits on a Fuji Superblock subfloor: foam blocks under two layers of board, so the floor absorbs impact instead of sending it into your joints. You feel the difference the first time you get taken down, and you really feel it the next morning.
Kids fall constantly. That is the whole sport. The floor is what makes falling boring instead of scary.
You have a job on Monday and a family that needs you healthy. Training hard should not cost you your knees.
Offseason is here. Drill takedowns at full weight without paying for it in your back and shoulders.
Who you will meet
Real people, on the mat, from day one.
Mike Barthlow
Co-Owner · Brown BeltMike came to jiu-jitsu from Division One college athletics and a career as a Marine officer. He is a brown belt, and he won the Masters 5 Open Class world title as a blue belt. He and Lori built a school around its community once before, and they are doing it again here. He is on the mat for every intro class, so if you show up, you meet him.
Carlos Eduardo “Kadu”
Featured Black Belt AthleteKadu is our featured black belt athlete, and he is G13. He came up inside the same system this room is built on, not from outside it. Having that level of jiu-jitsu on the mat raises the standard for everyone who trains here, from the first class on.
The network behind the name
This is what a G13 mat looks like.
The academy in Longmont is new. The system is not. These are G13 Cary and G13 Holly Springs in North Carolina, where the curriculum, the belt pathway and the standard for the room come from.
Photos from G13 Cary and G13 Holly Springs, North Carolina. Same curriculum, same belt pathway, same standard. Longmont opened the week of September 21 and photos of our own mat replace these as soon as we have them shot.
Reserve your spot
Save your place on the mat.
Spots in each intro class are limited so everyone gets attention on their first day. Pick the day that works for you.
Before your first class
Everyone who steps on the mat signs a guest waiver, first timers included. It takes a minute on your phone and saves you the paperwork at the door.
Sign the guest waiverFor anyone under 18, a parent or guardian signs it.
Already decided?
The first 50 members lock their rate for life.
You do not have to decide anything to take a free class. But if you already know you want to train, founding members keep their rate for as long as their membership stays active, across every program we run now and every one we add later.
See the founding member offer