Cailloux holds the whole race: the weeks before, at the kitchen table, and race day itself, up in the mountains. On your own, it's your living road book. With a crew, it becomes the thread that keeps you together.
Like Hansel and Gretel. Note that we took the pebbles, not the breadcrumbs — birds are not to be trusted.
We built an app for that. It is called Cailloux.
Plenty of runners have nobody at the roadside — and that is perfectly fine. Cailloux does not assume a crew: it serves you first, and knows how to welcome a crew when you have one.
Your road book comes alive: it knows the time, it knows where you are, and it speaks up at the right moment.
Everything above, plus the thread that keeps you together — no more “where are you??” shouted into the void.
The first happens at the kitchen table, weeks ahead. The second lasts a day and happens in the mountains. Cailloux covers both.
Everything is prepared in Le Cairn — named after those piles of stones stacked on a mountain to show the way to whoever comes next. You enter the organiser's cut-off times, and the app works out the rest.
The time you are aiming for, the cut-offs set by the organiser, or your past races: the whole schedule fills itself in — optimistic and pessimistic, aid-station stops included. Green while you are inside them, red where it gets tight.
Over 2 000 products in the catalogue, 95 brands. You set your targets in g/h and ml/h, and the intakes spread themselves across the length of the race.
One bag per leg, with what goes in it — drink mix sachets included. Plus a checklist saying what to carry, what to drop, and what to hand to the crew. And the weight of the pack, leg by leg.
The course as the organiser publishes it — distance, climbs, cut-offs, GPX track — already entered. You lay your feeding plan on top.
What you have at home, counted. It tells you what you are missing before the shop, and the Pebble-Dropper can draw from it alone, if you like.
A coach or a dietitian suggests, you decide. Free, for them as for you.
The runner checks in. Everyone watches the trail advance, live.
Estimated position on the map and the altitude profile, updated at every checkpoint.
Between 2 aid stations, drop your position with one tap. The map updates and the projected times reset.
A notification the moment your runner checks in. Even with the phone locked, deep in a pocket.
“Time to eat.” Right on time, on by default — because no, you will not think of it on your own. And your intakes tick themselves off.
A direct message, without hunting for signal for a call that will not connect.
Check-ins are kept on the phone, then sent as soon as the signal comes back. We know what mountains are like.
Held for 3 seconds, the button tells your crew with your position — and follows it as long as the alert lasts. It calls no emergency service: its guide says so in full.
Your stop in huge figures, next to the one your plan allows. You know whether you are dawdling, with no sums.
For the first 20 minutes, the app tells you if you are burning your plan. Nothing else: you decide.
There used to be 3 tracking apps — one per role. Now there is only one: everyone comes in through the same door, and it is their 6-digit code that decides what they see.
Where the race gets built: race sheets, runner notebook, GPX track, checkpoints, schedule, nutrition, kit and bags. It is also where the codes are issued — and where you open your race to a pro, if you want.
One app for everyone. On first launch you pick your role; the code you got from your route planner does the rest.
Who does what, in what order: build the race, then run it.
Read → ⏱Building your schedule — target time, cut-offs or past races —, with no spreadsheet and no headache.
Read → 🍫The catalogue, a strategy in g/h, and the Pebble-Dropper that fills your plan in for you.
Read → 🎒Kit, ziplock bags, and what to pour into which bottle at the aid station.
Read → 📡Putting it live, on its own 24 h before, in local time, with others. Then closing it.
Read → 🪨Dropping your position between 2 check-ins, by hand or on its own.
Read → 🚨One button to alert your crew. And above all, what it does not do.
Read → 👀Follow the race live, from the roadside or from afar: record passages, raise the alarm, and what the public sees.
Read → 🗄️What you have at home, counted: what you take out for a race, what you put back afterwards.
Read → 🏃Your runners from one race to the next: their code, their settings, your note.
Read → 🏁Starting from a course already entered, as the organiser publishes it.
Read → 🩺A coach or a dietitian in your race. They suggest, you decide.
Read →People signed up to the beta programme have been trying it since 19 October. On 16 November, it becomes the app for everyone.
The same account and the same races as in the app for everyone. With nothing to install, the web version works too, iPhone included.
No trial that expires, no paid tier, no feature that closes on your 3rd race. Everything is open, right away, to everyone — professional accounts included.
One account in Le Cairn and you can build your first race. No application form, no waiting list. Cailloux lives on donations — and nothing, absolutely nothing, is reserved for those who give.