HYROX Doubles and Relay: fill up your training group

You have an athlete who's been training well for a year, improving their times, tolerating the volume, and every time you bring up signing up for a race they give you the same answer: "not yet." It's not a convenient excuse. It's real fear of being left alone on the course, with a bib number, eight stations ahead of them and nobody to pull them out of the hole at kilometer six. You have that conversation ten times a season and it always ends the same way: the athlete keeps training, but never competes. And an athlete who never competes is an athlete who sooner or later gets bored and leaves.

HYROX's team formats (Doubles and Relay) solve exactly that problem, and along the way they solve a business one too. When the product is "come compete with someone," every sign-up brings at least one more person with it, and commitment stops depending only on the athlete's own willpower: it starts depending on not wanting to leave their partner hanging. That's the cheapest acquisition and retention mechanism available to you as a HYROX coach, and most coaches waste it because they program the pair as if they were two individual entries running on the same day.

What the current rules actually say

Before you sell anything, you need to be able to explain the format without hesitating. The rules get updated every season, so always check the official rulebook for the event your athletes are signing up for, but the general structure is this.

Doubles: both athletes do the whole race, together

• Running: both team members run all eight 1 km segments together, the whole time. The running isn't split between them. The rules require them to stay together and include time penalties if one pulls ahead and leaves their partner behind.
• Stations: the total workload is the same as in individual (the same meters and the same reps). What changes is that it's split between two.
• Split: the team decides freely how to divide each station. There's no mandatory or fixed split, and they can switch as many times as they want as long as only one works at a time while the other waits in the designated zone.
• Entering and exiting: both enter the station together and both leave together. One doesn't get a head start on the next kilometer.
• Weights: depend on the team's division, not the individual. Check the season's rulebook for which ones apply to your category before programming the loads.

Relay: four athletes, two kilometers and two stations each

• Structure: the team has four members and the race itself stays the same: 8 km and 8 stations. Each athlete covers 2 x 1 km and 2 stations.
• Order: the stations are done in the official order, 1 through 8, but who does which is up to the team. You can assign them by strengths.
• Handoff: the change happens in the transition zone with a hand slap between the one arriving and the one waiting. The same athlete can chain their two blocks back to back, but they still have to go through the transition zone for the chip to register.
• Finish: all four cross the finish line together after the last station.

The practical difference between the two is huge for designing your product: Doubles still demands 8 km of running per person, so it's a real endurance format. Relay cuts the running down to 2 km per athlete and is, by far, the best entry point for someone who's never run a race in their life.

Why the team format knocks down the barrier the individual one can't

The athlete who doesn't sign up isn't afraid of the effort. They're afraid of three very specific things: finishing last, not finishing at all, and that happening while everyone watches. The team format disarms all three at once. They won't be alone on the course. They won't have to carry the full volume of a station that scares them by themselves. And if the day goes badly, the result is shared, so the emotional cost of failure gets split.

That shift in framing is what turns an impossible sales conversation into an easy one. You stop asking someone to expose themselves and start offering them a chance to take part. It's the same race, the same venue, the same finisher medal, but with a much lower psychological barrier to entry.

The team format isn't a watered-down version of HYROX. It's the version where fear stops being the reason your athlete doesn't sign up, and that fear is, almost always, the only filter that's holding back the sale.

How your programming changes when you coach a pair

Here's the most expensive mistake: giving each team member the same individual plan and expecting them to coordinate on their own on race day. The pair is a tactical unit and needs to be trained as one.

Build the pair around complementary profiles

Don't put together the two who get along best. Put together the two who compensate for each other. If you have an efficient runner who's weak on strength and another who moves weight but fades while running, that pair can split the work so each one absorbs what the other struggles with. The exception is Doubles: since both run the full 8 km, too big a pace gap forces the faster one to hold back and the slower one to run in the red the whole race. There you need similar running profiles and complementary strength, not the opposite.

Rehearse the rep split, don't improvise it

A well-prepared pair shows up to the race with a written split for each of the eight stations, and they tested that split in training under accumulated fatigue, not fresh on a Tuesday at ten in the morning. Define concrete blocks: how many meters per turn, how many reps per round, and a plan B for when one of the two blows up. The goal of the split isn't fairness, it's that neither one enters a station already wrecked.

Train the handoff and the communication

Time gets lost in the transitions, not in the work. Treat the handoff as a skill in itself: the one waiting is in position, the one finishing lets go and clears the space, and there's an agreed word to call for the handoff before hitting failure. In Relay, add the walk through the transition zone and the hand slap. Two seconds lost per change, multiplied by twenty changes, is almost a wasted minute.

Decide in advance who starts each station

Have the one who's going to do the bigger portion start, while the other recovers from the run. Leaving that decision for the moment creates a few seconds of hesitation at every station and, worse, an argument. Write it into the race plan and don't touch it.

The classic mistakes of a poorly prepared pair

• Splitting it fifty-fifty by default: an equal split ignores that one of them is much better on the sled and the other on wall balls. Split by strength, not by symmetry.
• Turns that are too long: the one working hits failure and the one waiting cools down. Shorter, more frequent turns usually sustain power better, especially on the lower-body stations.
• Never having trained together under fatigue: coordination falls apart once the burn shows up. If the only time they rehearsed the split was fresh, they didn't actually rehearse it.
• No agreed running pace in Doubles: if they never defined what pace to run together at, the stronger one pulls ahead, they risk a penalty, and the slower one arrives at the station already broken.
• Zero plan for a bad day: one of the two is going to feel bad at some point. If they didn't agree on how to reabsorb the work when that happens, the pair falls apart right there.

How to build and sell the group product

This sells as a closed program, with a race date and limited spots, not as an open membership. Pick an event 10 to 12 weeks out, open sign-up by pair or by four-person team, and sell the full package: preparation, race plan and support on event day.

1. Weeks 1 to 3: individual base. Each athlete works on their deficits and you measure where each one is starting from so you can build the pairs with judgment.
2. Weeks 4 to 7: pair work kicks in. Sessions where the split is rehearsed station by station and the turns get adjusted.
3. Weeks 8 to 10: partial trial runs and one full race in team format, with a stopwatch and real handoffs.
4. Last week: taper and a written race plan closed out for each team.

For the sale, lean on the social component: ask every sign-up to come with their partner. A Relay team is four people paying, and probably not all of them were yours to begin with. The program fills up through invitations between athletes, not through advertising, and dropout drops because quitting means leaving a friend without a team.

Operationally, the point that makes this scale is not duplicating work. With ATHRIX you build the pairs program once and assign it to both team members or to all four on the team, and then you track each one separately: who completed the sessions, how their numbers evolve at each station, who's been racking up absences. That's the information that lets you rebuild a pair in time when you see the profiles don't fit, instead of finding out on race day.

Conclusion

Doubles and Relay aren't a minor category: they're the most efficient entry channel you have for moving athletes from training to competing. The format lowers the fear, splits the load and turns the outcome into something shared, which is exactly what the person who's been saying "not yet" for two years needs. If you also program it the way it deserves, instead of just stacking two individual plans together, your service becomes something no generic gym in the area can offer.

Pick a race from the calendar, count back 10 or 12 weeks, and open team sign-up this week. You don't need more athletes to get started: you need the ones you already have to each bring someone along. That's the whole model, and it works because the cross-commitment between partners does a retention job no marketing strategy will ever do for you.