Small group personal training (SGPT) is personal training delivered to groups of six people or fewer. Every member follows their own programme, coached properly, in the same session. The client pays less than 1:1 rates. The gym earns more per coaching hour. The coaching quality stays high because the ratio stays small.
That last sentence is the whole model. Get the ratio wrong and everything downstream breaks.
At Gym Owner Network we've mentored 500+ gyms across 16 countries, and we run small group gyms ourselves. This page is the full picture: what SGPT is, what it is not, the numbers behind it, and how to know if it's the right model for your gym.
What counts as small group personal training?
SGPT means a maximum of six clients per coach, each on an individualised or semi-individualised programme, with the coach actively coaching rather than supervising. The session is personal training in a shared space, priced at a premium above group classes and below 1:1 rates.
Three things have to be true for a session to be SGPT:
The ratio is 1:6 or better. Six is the ceiling, and it exists for a reason. At six, a coach can see every rep, correct every fault, and know every client's programme, history, and niggles. At eight, they're scanning. At twelve, they're supervising.
Every client is on a programme. Not the workout of the day. A programme built around their goals, ability, and training age. Two people in the same session can be doing different things, and often are.
The coach coaches. Cueing, correcting, progressing, regressing. If the coach is standing at a whiteboard counting down a clock, that's a class with fewer people in it.
What's the difference between small group PT and group classes?
The difference is coaching. A group class delivers one workout to everyone in the room, and the coach manages the room. Small group PT delivers individual coaching to each person, and the coach coaches every rep. The class model sells access and atmosphere. SGPT sells results.
Ratio is the visible difference. A class at 1:12 or 1:15 can be a great product, but it's a different product. The coach cannot give twelve people individual attention, so the session is built to run without it.
There's a trap between the two: sessions of eight to ten, priced like small group, coached like a class. We call this no man's land. Too expensive to compete with classes, too diluted to justify PT-level prices, and the coaching quality that made the gym special quietly disappears. Many gym owners drift here by accident, adding one more spot per session to make the numbers work. Each spot feels harmless. Together they change what you sell.
We've written a full comparison of the two models here: SGPT vs group classes: why 1:6 beats 1:12.
How does the SGPT business model work?
SGPT works because it multiplies coaching revenue per hour while protecting coaching quality. A coach charging £40 for a 1:1 hour earns £40 for the gym. The same coach with five clients at £22 each earns £110 in the same hour, and every client pays roughly half of what 1:1 would cost. The client wins, the coach wins, the gym wins.
That maths is why SGPT gyms can pay coaches properly, and why owners can eventually step off the floor. The model produces enough margin per session to fund a real team.
It also changes retention. Across the GON network, average member lifespan is 18+ months against an industry standard of around 9. Attrition across the network runs at 2 to 3% a month. Those figures come from gyms running small group properly: capped sessions, individual programmes, coaches who know their members. People stay where they're known.
The revenue picture follows. The average GON member adds £130k in new revenue in their first year, and most recoup their mentorship investment within 60 days, usually from a single price change. Those are averages from real member gyms, never a guarantee. We share them because they show what the model can carry when the product is right.
Who is small group personal training for?
SGPT suits gym owners who care more about coaching quality than headcount. In our experience mentoring 500+ gyms, owners arrive at small group from four common starting points:
The 1:1 personal trainer who has hit the ceiling on their own hours. There are only so many sessions in a week, and every holiday is unpaid. SGPT is how a great PT scales income without scaling hours.
The CrossFit affiliate owner tired of volume economics. Big classes, low prices, high churn. The coaching skill is there. The model fights it.
The large group operator who knows the coaching gets lost at 1:12. They built classes because that's what everyone builds. They can feel the product thinning.
The semi-private studio priced by feel. Already close to the model, but with no structure behind the pricing, programming, or capacity maths.
Almost nobody starts with a deliberate, structured small group model. That's normal. The model is a destination, not an entry requirement.
What does it cost to run, and what should it charge?
SGPT is a premium product and has to be priced like one. Under-pricing is the most common fault we see, and it's rarely a market problem. It's a confidence problem. The owner doesn't fully believe the product deserves premium pricing yet, so they price for the community instead of the value.
The order matters here: fix the product first, then price it. Once sessions are genuinely capped, programmes are individual, and coaching is consistent, the price rise stops feeling like a betrayal and starts feeling obvious.
We've published our full pricing breakdown, with the maths per session and per member, here: small group personal training pricing: what to charge.
Frequently asked questions
Is small group training profitable?
Yes, when the ratio and pricing are right. SGPT typically earns two to three times more per coaching hour than 1:1 training while charging each client roughly half of 1:1 rates. Profitability fails when sessions creep past six people or prices stay at class levels.
What ratio is small group personal training?
1:6 or smaller. Six is the maximum at which a coach can deliver genuinely individual coaching. Anything above six drifts toward a class, whatever it's called on the timetable.
Is SGPT the same as semi-private training?
They overlap. Semi-private usually means 1:2 to 1:4 with fully individual programmes. SGPT runs up to 1:6, sometimes with shared programming structures. The principle is identical: personal coaching, shared session, premium price.
Can I switch my existing gym to small group?
Yes, and most GON members did exactly that from 1:1, classes, or a mixed model. It's a structured transition, not an overnight relaunch. Done properly, existing members move with you.
How many members can an SGPT gym serve?
More than most owners think. A gym running 40 coached sessions a week at 1:6 can serve roughly 100 to 150 members depending on visit frequency, with a small team, from a modest footprint.
The point of the model
Small group personal training exists to solve a problem the fitness industry keeps making worse. The standard advice to a struggling gym owner is more: more leads, more members, more bodies per session. For a coach who cares about the product, that advice is poison. It asks you to break the thing your business is built on.
SGPT is the opposite bet. Cap the room at six. Coach properly. Charge what that's worth. Quality should pay, and small group done properly is the model that proves it can.