25 November 2025 · Tomas Reyes
What HYROX Training in Your Gym Looks Like
If you run a gym right now, you've almost certainly had a member walk in, drop the word "HYROX", and ask whether you do anything for it. Maybe a few of them have already signed up for a race in London or Manchester, and they're on your floor doing sled pushes and wall balls with no real structure. HYROX training is one of those rare things where the demand shows up before you do anything. The question is whether you build something for it or watch those members drift to a box down the road that has.
I've been on the wrong side of that. A few of my regulars got into it, I had nothing formal to offer, and I lost some floor energy to a unit two miles away that ran a Sunday HYROX session. So this is the honest version of what setting it up actually looks like when you do it properly: the format, how you run a simulation, and how you avoid buying a load of kit for an event you'll host twice a year.
Why HYROX belongs in your gym
HYROX is simple to understand, which is most of the appeal. Eight one-kilometre runs, and between each run a functional station: ski erg, sled push, sled pull, burpee broad jumps, rowing, farmers carry, sandbag lunges, wall balls. It's the same for everyone, everywhere, so your members can train for a real event with a real finish time to chase.
That last part is the bit gyms underrate. Most group training has no scoreboard beyond how you felt. HYROX has a clock and a global standard, so a member training for it has a genuine target and a reason to keep coming back. That's the sort of goal-led membership that keeps people around, the same logic I dug into in reducing gym member churn.
You also don't need a HYROX affiliation or a warehouse of specialist gear to start. Sleds, wall balls, a rower or ski erg, and some space to run: most functional gyms already have the bones of it.
What a HYROX block looks like on the floor
You don't run the full race every week, that would wreck people. A good block mixes three things.
Running under fatigue. The thing that catches everyone out in a real HYROX is running with a heart rate already through the roof from a station. So you train it: short runs sandwiched between functional work, so legs learn to move when they're gassed. Seeing effort live on the screen matters here.
Station strength and technique. Sled push and pull, wall balls and lunges are where races are won and lost. These sessions are heavier and slower, drilling technique and the specific strength each station needs.
Simulation days. Every few weeks you run a full or compressed simulation so members feel the real thing: the transitions, the pacing, the mental fight of run eight. It's the session they'll talk about all week.
Running a full simulation without timing chips
Here's where most gyms get stuck, and honestly where I think Fittest earns its place. To run a proper simulation the traditional way you've got two options, and both are a pain.
You either buy timing chips and the hardware that reads them, which is real money for an event you might host twice a year. Or you make do: a timer on the wall, members scribbling their finish time onto a sheet of paper, and you spending your evening typing all of it into a Google Sheet to hand back. I've done the paper-and-spreadsheet version plenty of times. It eats hours and it's never quite right.
With Fittest your members just need the wearable already on their wrist. The system runs the whole simulation and puts a live leaderboard on your screens showing each person's full time as they go. You set it up the way a real race runs: build your waves, set the groups within each wave, and the size of each group. Every member is told their wave start time, in the app or straight on their watch, counting them down to their start. No wall clock to squint at, no paper, no spreadsheet afterwards.
When I first ran it in my own gym, it was hands down the best feature we'd used. A room full of people racing their own clock, their times climbing the board in real time, and me doing none of the admin. That's the whole pitch.
Score your strength sessions too
HYROX is half engine, half strength, so your training block should count both, not just the runs. In Fittest a member picks their workout type when they start a session: cardio, cross-training, cycling, strength, and so on. Pick strength and you get scored for it, so the heavy sled and wall-ball sessions your members grind through to prep for a race earn points too, not only their conditioning. That's the idea behind strength scoring that rewards lifting like cardio: a member's whole week counts on the board, not just the parts that spike their heart rate.
Between races, Personal Bests give them something to beat. A personal best is your best points score for a session, so a member can watch themselves top their previous efforts over a 90-day window. Even when the next race is months out, they can see the work paying off.
How Fittest helps
This is the part I can be specific about, because it's what we run. Fittest has a built-in simulation feature, so you can run the full format on your floor. You build the waves, groups and group sizes, the app counts each member down to their wave, and the whole field's live times climb a leaderboard on your screens. No timing chips, no chest straps to hand out, no spreadsheet the morning after.
Members connect the wearable they already own, from Apple Watch and Garmin to WHOOP, Polar, Myzone and most HR belts, and their live heart rate and effort points go up on any TV in the gym with no hardware for you to buy. When members log their strength prep as a strength workout they get scored for it, so the lifting counts alongside the running. Personal Bests track their best points score session to session, so the improvement is visible between races. It's one platform, on your existing screens, on your members' existing watches, for a flat monthly fee per location.
If HYROX is already walking through your door, the worst move is to leave it unstructured. Give those members a real block to follow and a proper simulation day they can race, and you turn a passing trend into a fixture on your timetable.
Want to see a full simulation running live on your gym's screens? Book a Fittest demo and I'll walk you through setting one up with the wearables your members already own.
Tomas
