Endurance events have never been more oversubscribed. Fitt Insider reports that New York turned away 99% of the 240K applicants to its 2026 marathon, London is expanding to absorb more of its 1.3M hopefuls, and HYROX expects 2M global participants across 2026/27 — up from 650K in 2025, pushing it toward a 10-day festival format.
That's a remarkable funnel. It's also a retention trap. Brands have gotten very good at selling the build-up — training plans, pop-ups, race-week activations — and almost nobody has designed for the week after. For a gym, studio, or app, the finish line is the moment your most motivated member suddenly has nothing to train for.
The arrival fallacy is a churn event
The issue names the mechanism directly: the arrival fallacy, or the belief that hitting the goal delivers lasting fulfillment. Gymshark found that more than a third of HYROX finishers experience a euphoric finish followed by a deflating comeback. Fitt Insider also points to research showing multi-marathoners reporting higher anxiety and depression, often moving the goalposts without ever registering the accomplishment.
Read that as an operator and it stops being a psychology story. A member who trained for sixteen weeks and then feels flat is a member whose visit frequency is about to fall off a cliff. The emotional dip and the billing dip arrive on the same schedule.
The brands the issue highlights are treating the aftermath as designable: Bandit's medal portraits, On's commemorative flash tattoos, Gymshark's sandwich shop takeover. Those are good instincts — they extend the moment. The harder problem is what a finisher does on a random Tuesday three weeks later.
Give the finish line a sequel, not a souvenir
This is the gap Cadoo Games is built for. Members stake their own money with friends on hitting a fitness goal, and the game runs on a recurring cycle — so when one ends, the next one is already there. Instead of a single peak followed by a void, a member's calendar has a rolling series of small commitments.
A few things make that work better than a discount or a win-back email:
- Social accountability beats willpower. Friends are in the game and money is on the line, which is a far stronger pull than an app notification during a motivational low.
- It fills the space between visits. Recurring games run in the days a member isn't in your building, which is exactly where post-race drift happens.
- It's measurable. Cadoo's camera verifies reps. Steps and distance come from Apple Health or Google Health Connect — so you're looking at real engagement data, not self-reported check-ins.
For a race organizer or a gym that just ran a cohort through an event, the post-event game is the natural next product: same community, same group chat, a new stake.
The rest of the week's signal
The same issue shows how seriously the tracking category is taking long-term health engagement. WHOOP hired former FDA advisor Dr. Ami Bhatt as chief medical officer, following its medical-grade band and partnerships with Mayo Clinic and Abbott. Oura added Counsel Health medical guidance, Dexcom glucose integration, and GLP-1 management. Eight Sleep is pursuing FDA approval for sleep apnea detection, with CEO Matteo Franceschetti telling Fitt Insider its smart bed is becoming a medical-grade device.
On the money side, Garmin acquired the TrainingPeaks and TrainHeroic coaching platforms — a bet that structured programming, not just data capture, is where wearables earn their keep.
The through-line: every one of these companies is trying to extend its relationship with a user beyond a single metric or a single event. Adherence is the product now. Cadoo's version of that is making the next goal social and financially real, and turning verified workouts into shareable, skinned videos your members actually want to post — which markets the brand better than the ad you'd otherwise buy.
Where this goes for brands
If you run gyms, studios, an app, or a race, the practical move is to stop treating your event as the destination and start treating it as an onboarding moment for something recurring. The audience is already assembled and already proud of itself. That's the cheapest re-engagement you will ever get.
We're also building toward letting winnings convert into credit or perks at the business itself — that's on our roadmap, not live yet — which would close the loop between a member's consistency and their spend with you.
If you want to see what a post-event game looks like for your members, take a look at Cadoo for brands or email Tim@cadoo.io.
Frequently asked questions
Why do members disappear after a big race?
The issue points at the arrival fallacy — the assumption that finishing delivers lasting fulfillment. Gymshark found more than a third of HYROX finishers report a deflating post-race experience. When the goal that structured sixteen weeks of training vanishes, so does the reason to show up, and visit frequency drops with it.
How does a staked game help with post-event drop-off?
It replaces the missing goal immediately. Members put their own money in alongside friends on a specific target, and games recur, so finishing one rolls into the next. The commitment is social and financial rather than motivational, which holds up better during the flat weeks after an event.
What does Cadoo actually verify?
The camera counts reps, and it scores form on those movements. Steps and distance come from Apple Health or Google Health Connect rather than the camera. That mix gives brands engagement data they can trust instead of self-reported attendance.
Can race organizers use this, not just gyms?
Yes. An event already gathers a motivated cohort with a shared identity, which is the hardest part. A recurring game aimed at that cohort after race day keeps the community active between events and gives the organizer a reason to stay in contact year-round.
